Open Space Areas
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Open Space Map

 
     
Alta Vista Lang Ranch Santa Monica Mountains
Arroyo Conejo Los Padres Skyline
Conejo Canyons Los Robles South Ranch
Conejo Ridge Los Vientos Southshore Hills
Deer Ridge Lynnmere Summit House
Dos Vientos McCrea Sunset Hills
Fireworks Hill
Mount Clef Ridge Tarantula Hill
Glider Hill
North Ranch Ventu Park
Hope Nature Preserve Oakbrook Regional Park Walnut
Knoll Old Conejo Wildwood Park
Labisco Hil Old Meadows Woodridge
La Jolla Potrero Ridge Zuniga Ridge
Lake Eleanor Rancho Potrero  
     
     
Alta Vista
The Alta Vista Open Space is located adjacent to the Dos Vientos Open Space in Newbury Park. Most of this 43-acre area is owned by a homeowners association, although about 11 acres, located on the south side of Calle Alta Vista, is owned by the Conejo Open Space Conservation Agency (COSCA). The predominant habitat on-site is coastal sage scrub.
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Arroyo Conejo
The 302-acre Arroyo Conejo Open Space includes the Arroyo Conejo Nature Preserve, which is located northeast of the intersection of Hillcrest Drive and Ventu Park Road. This preserve, which is often referred to as the "barranca", was highlighted in the Conservation Element of the General Plan (1972) and identified in the City's Conejo Canyons Study (1976) as an area with particularly important and sensitive resources. Resources include steep-sided canyons, oak woodlands, a perennial stream, and riparian vegetation which provide ideal habitat for nesting, foraging and wildlife movements. The preserve is owned by COSCA, with some limited access to protect the area's resources.
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Conejo Canyons
The Conejo Canyons Open Space is a system of deeply eroded canyons, plateaus and ridgelines in the northwest portion of the Conejo Valley. This area, which totals 1,628 acres, includes the northern Arroyo Conejo, Western Canyon, Hill Canyon, and portions of the Seventh Day Adventist property. On clear days, trails in this area afford dramatic views of Ventura and the coastline, as well as inland to the Topa Topa mountains north of Ojai. This area also conserves a variety of habitats, including coast live oak woodlands, riparian habitats, interior sage scrub/chaparral, and coastal sage scrub. Most of this area is owned by the City of Thousand Oaks.
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Conejo Ridge
This 404-acre area includes a secluded valley, with hillside and mountainous terrain as well, and forms an important part of the open space ring on the southern edge of the Conejo Valley. Located south of the Ventura (101) and Thousand Oaks (23) Freeway interchange, this area includes relatively undisturbed chaparral, oak woodlands and coastal sage scrub, and provides important habitat for deer, mountain lions, bobcats and other wildlife. The only trail in this area links the southerly terminus of Rimrock Road with the Los Robles Trail, and other trails are planned. This area is adjacent to several other open space units.
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Deer Ridge
Located in the southwest portion of the City, the Deer Ridge Open Space is owned by COSCA and is dominated by a series of north-facing ridges and canyons that support chaparral with scattered oaks. This 188-acre area shares a common border with the Santa Monica Mountains National Recreation Area, and is a prominent visual feature in the Newbury Park area. The Los Robles Trail traverses the length of the Deer Ridge Open Space, with access points at the southern end of Felton Street, and at a trailhead on Potrero Road.
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Dos Vientos
This large open space area (1,216 acres) is located in the southwest corner of the Conejo Valley and is required to be dedicated as public open space per Specific Plan conditions and a development agreement for the Dos Vientos Ranch. Dominated by chaparral and coastal sage scrub habitats, this area provides habitat for a wide variety of wildlife as well as rare and endangered plants. A trail system provides internal and regional trail connections, as well as views of the Pacific Ocean and the Channel Islands. The principal trail access points for this area are park sites planned for the Dos Vientos Ranch. To the south of the Dos Vientos Open Space is the Rancho Potrero, Rancho Sierra Vista/Satwiwa and Point Mugu State Park, encompassing over 16,000 acres of open space. Contiguous open space areas to the east include the Alta Vista Open Space, Potrero Ridge Open Space, and Los Vientos Open Space.
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Fireworks Hill
This 33-acre open space area is located on the north side of the former Civic Center site at 401 West Hillcrest Drive, and includes the site of the annual fireworks display. Its sage-covered slopes are visible from the Ventura Freeway, and many areas in central Thousand Oaks.
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Glider Hill
This area consists of 57 acres of private open space that encircle two prominent knolls. The dominant vegetation in this area is non-native grassland.
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Hope Nature Preserves
This 359-acre parcel was a gift from the actor and comedian Bob Hope to the Conejo Recreation and Park District. Located on the south side of the valley, this open space contains extensive stands of chaparral and oak woodland that provide ideal habitat for deer, coyotes, mountain lions, bobcats, gray fox, rabbits, and many other animals. In the springtime many wildflowers can be seen along the trails in this area. The Los Robles Trail provides the principal access through this open space, including connections to Lynn Oaks Park.
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Knoll
The 21-acre Knoll Open Space is located next to Pepper Tree Playfield in Newbury Park. This area, which is owned by COSCA, is covered in a mosaic of non-native grasslands and coastal sage scrub. A gently sloping trail leads to the top of the hill, which offers views of Newbury Park and the surrounding area.
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Labisco Hill
The Labisco Hill Open Space is located in the heart of Thousand Oaks, near the northwest corner of Janss Road and Moorpark Road. Although relatively small (24 acres), this grassland-covered knoll provides a visual contrast to the urban landscape and creates a sense of spaciousness in the area.
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La Jolla
This 15-acre open space area conserves a scenic area adjacent to the Thousand Oaks Freeway, dotted by mature oak trees and the location of an oak reforestation project that is currently underway.
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Lake Eleanor
The Lake Eleanor Open Space is named for an eight-acre freshwater lake located near the center of this 513-acre area. Acquired by COSCA in 1986, this area includes diverse wildlife habitat and scenic resources, rugged hills, prominent rocky outcrops, freshwater marsh habitat, oak woodland and coastal sage scrub. The rocky outcrops are often used by hawks and other large birds as nesting sites, and the area supports several species of rare and endangered plants. Due to the rugged terrain and sensitive resources, trails have not been developed in this area.
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Lang Ranch
The Lang Ranch Open Space is located in the northeast portion of the City and is composed of several open space units totaling 901 acres. The largest of these areas is a picturesque 914-acre parcel that includes rolling grasslands, oak woodlands, and riparian corridors. The principal access to this area is from Lang Ranch Neighborhood Park on Lang Ranch Parkway. The Lang Ranch trail system provides connections to other public lands, including China Flats, Cheeseboro Canyon, Palo Comado Canyon, and the North Ranch Open Space.
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Los Padres
This open space preserve is located near the southern end of Moorpark Road, and encompasses 187 acres of chaparral-covered hillsides and oak woodlands. This area includes one of the most beautiful stands of coast live oaks in the City, and can be easily accessed from a trailhead on Los Padres Drive. This trail also provides a direct link to the Los Robles Trail near the ridgeline. This area is frequented by deer, rabbits, California quail, California thrasher and many other animals. In the spring and fall, the oak woodlands are an excellent place to observe migrating birds such as warblers and vireos. Most of this open space area is owned by COSCA.
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Los Robles
The Los Robles Open Space contains approximately 358 acres of land located on the southerly edge of the Conejo Valley. It includes a nearly mile-long stretch of the prominent ridgeline flanking the Valley, along with dense chaparral-covered slopes and some relatively flat, grassy potreros near the ridgeline where one can often see deer browsing in the early morning and late afternoon. There are several miles of trails within this open space area, and the ridgeline trails provide some of the most scenic vistas in the Valley, with panoramic views of Thousand Oaks. The principal trailhead is at the southern terminus of Moorpark Road, with secondary access from a trailhead at the Arts Council Center.
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Los Vientos
This open space area is located at the southern terminus of Los Vientos Drive in Newbury Park. Covering 28 acres, this area includes non-native grassland and coastal sage scrub habitat. The area is contiguous to the Dos Vientos Open Space, and is owned by COSCA.
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Lynnmere
The Lynnmere Open Space protects 114 acres of hillsides and a prominent ridgeline, and is frequented by deer and other wildlife. A ridgeline trail in this area provides views of Wildwood Park, Mount Clef Ridge, and the Conejo Canyons Open Space.
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McCrea Open Space
The centerpiece of this 148-acre open space area is the 75-acre McCrea Wildlife Refuge, which was a gift to COSCA from the actor Joel McCrea and his family in 1981. The refuge includes rocky outcrops that are favorite roosting and nesting sites for birds of prey, as well as a deep canyon that provides a year-round water source for local wildlife and riparian vegetation. The area also supports several species of rare and endangered plants and the locally unique Conejo rock plant association. Under terms of an agreement with the McCrea family, public access to this preserve is limited to protect sensitive resources.
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Mount Clef Ridge
The Mt. Clef Ridge Open Space totals 212 acres, and affords sweeping views of both the Conejo Valley and the Santa Rosa Valley. Plant communities include coastal sage scrub and chaparral. Two sensitive plants- the Lyon's Pentachaeta and Conejo Dudleya- are found in this area, and the area also supports many wildlife species such as deer, coyote, and gray fox. A trail connects this area to trails in Wildwood Park.
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North Ranch
The North Ranch Open Space includes an extensive system of protected areas that conserve diverse habitats, plants, and animals. This area, which totals 2,5954 acres, is primarily owned by COSCA, with a few smaller areas in private ownership. Among the most outstanding resources in this area are the sandstone cliffs of the Simi Hills, spacious mosaics of coastal sage scrub and grassland, pockets of Southern California black walnut groves, and coast live oak woodlands along the area's creeks. Wildlife is abundant, and includes most mammals and birds likely to be seen in the Conejo Valley. A number of sensitive plants also occur in these areas. Access to the North Ranch Open Space is provided at the North Ranch Playfield, and from neighborhood trail access points.
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Oakbrook Regional Park
This 436-acre park is owned by the County of Ventura, and features a Chumash Interpretive Center. The park is located adjacent to the Lang Ranch Open Space in the northeast corner of the City, and was established to protect cultural resources, chaparral habitat and an outstanding coast live oak woodland along Lang Creek. Public access to this park is restricted to the Interpretive Center on Lang Ranch Parkway. Most of the park consists of steep, north-facing slopes with dense chaparral and occasional sandstone outcrops.
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Old Conejo
This open space area is located on the north side of Old Conejo Road and Peppertree Playfield, and protects 38 acres of coastal sage scrub habitat. A trail from Old Conejo Road provides access to this area, which has excellent views of Newbury Park and Boney Mountain to the south.
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Old Meadows
This 49-acre open space area is located adjacent to Old Meadows Park and just east of Conejo Creek Park. This area supports non-native grassland, coastal sage scrub and scattered coast live oaks, and includes a knoll with views of the Conejo Valley. Access is provided from Shadow Oaks Place and Marview Road.
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Potrero Ridge
The Potrero Ridge Open Space encompasses a low-lying ridge that runs east-west in Newbury Park. This area, which totals 203 acres, includes grassy hillsides, coastal sage scrub, and oak woodlands, and is accessed from a trailhead on Wendy Drive. A trailhead planned for the Potrero Ridge Open Space at Reino Road will provide additional access to this area and to the Dos Vientos Open Space to the west. Most of this area is owned by COSCA.
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Rancho Potrero
In 1993, the City, Conejo Recreation and Park District (Park District) and the Mountains Recreation and Conservation Authority cooperated to acquire a 316-acre portion of the Rancho Potrero, located south of Potrero Road in the southwest corner of the Conejo Valley. This area, which is bordered on the east by the National Park Service's Rancho Sierra Vista/Satwiwa Native American Indian Culture Center, includes grasslands, coastal sage scrub with the Conejo rock plant association, and riparian habitats. While specific land uses have not yet been defined for this property, it is likely that a significant amount of the site will be designated as natural open space, including steep slopes on the south side of the property that form part of the Sycamore Canyon drainage system. Trails in this area will connect to the Dos Vientos Open Space and the Santa Monica Mountains National Recreation Area. A portion of this area is being used as an interim location for the Two Winds Ranch Equestrian Center.
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Santa Monica Mountains National Recreation Area

Established in 1978, the Santa Monica Mountains National Recreation Area (SMMNRA) includes approximately 63,000 acres which is open space held by the Federal government and public agencies. About 928 acres of this total is within the Thousand Oaks Planning Area, located at the southern edge of Newbury Park. Within this area is Rancho Sierra Vista and the Satwiwa Native American Indian Culture Center. Trails from Rancho Sierra Vista connect to the Pacific Ocean, through Point Mugu State Park. The primary access to these areas is from a trailhead at West Potrero Road and a trailhead  on the south side of Lynn Road, just west of Via Las Brisas. The SMMNRA is managed by the National Park Service.
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Skyline
This area is located south of Skyline Drive, and includes a series of small north-facing ridges and valleys. This 59-acre preserve is covered in dense chaparral, with occasional stands of coast live oaks. Most of this open space area is owned by COSCA.
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South Ranch
The South Ranch Open Space was donated to COSCA in 1986 by the Prudential Insurance Company, and includes 662 acres. This area protects a significant portion of the ridgeline south of the Ventura (101) Freeway, extending toward Lake Eleanor. A variety of habitats occur in this area, including chaparral, coastal sage scrub, and coast live oak woodlands, as well as a significant portion of the Los Robles Trail. Principal access to this area is from Triunfo Community Park. Deer, bobcat, and rabbits are commonly seen in this area.
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Southshore Hills
This 13-acre area is located between Southshore Hills Park and the Lake Eleanor Open Space. This area serves principally as wildlife habitat and to protect visual resources, with no trails planned. This preserve is owned by COSCA and supports coastal sage scrub and chaparral.
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Summit House
The 34-acre Summit House Open Space is located near the northeast corner of Avenida de los Arboles and Lynn Road, and includes non-native grassland and coastal sage scrub. The Summit House Open Space is owned by COSCA.
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Sunset Hills
This area includes 410 acres of open space preserves distributed throughout the Sunset Hills community in northern Thousand Oaks. The largest of these preserves is a key component of the "ring" of open space, located on Erbes Road, east of the Thousand Oaks (23) Freeway and south of Olsen Road. This 238 acre area protects oak woodlands, coastal sage scrub, non-native grasslands and coastal sage scrub. Several trails in this area provide views of Bard Reservoir, and on clear days one can see the Pacific Ocean. This area supports many species of wildlife, including birds of prey such as black-shouldered kites, northern harriers and red-tailed hawks. Spring blooms of bladderpod attract many Anna's hummingbirds to this area. Access is provided from a trailhead on the east side of Erbes Road.
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Tarantula Hill
This area, named for the spiders which frequent its grassy slopes, is located in the heart of Thousand Oaks near the Conejo Valley Botanic Gardens. Rising sharply from the valley floor, this 45-acre area provides panoramic views of Thousand Oaks. Parking is available on Gainsborough Road, with a paved road providing access to the open space.
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Ventu Park
This 141-acre open space area is located in the community of Ventu Park. Covered in dense chaparral with occasional coast live oaks, this area provides important wildlife habitat and protects scenic, north-facing slopes and a portion of the southern ridgeline. A trail in this area provides access to the Los Robles Trail from Lynn Road.
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Walnut
This small, 9-acre area is located next to Walnut Park, near the intersection of Lynn Road and the Ventura (101) Freeway. As such it is a critical scenic resource at an important gateway to the community. The area includes coastal sage scrub and a few coast live oaks. A trail from Walnut Park provides access to this area.
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Wildwood Park
Wildwood Park comprises the largest contiguous open space unit in Thousand Oaks. Covering 1,732 acres and located adjacent to an additional 1,397 more acres of open space, Wildwood Park protects many important wildlife habitats as well as provides many opportunities for passive recreation. Trails provide access to most parts of Wildwood Park, and several picnic areas are located near Wildwood Creek. Almost all of the plant communities found in Thousand Oaks can be located in Wildwood Park, and the park supports several species of rare and endangered plants. Wildlife includes deer, bobcat, raccoon, coyote, opossum, gray fox, and mountain lion. Access is provided at the western terminus of Avenida de los Arboles, and at several neighborhood access points. A trail map and brochure is available from COSCA describing the history and resources of Wildwood Park. Most of Wildwood Park is owned by the Conejo Recreation & Park District, with lesser amounts owned by COSCA.
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Woodridge
This 608-acre open space preserve is located in northeast Thousand Oaks, and adjacent to the Lang Ranch Open Space and Oakbrook Regional Park. The habitat is varied, with coastal sage scrub areas, chaparral, and oak-filled canyons. Trailhead access is provided at Lang Ranch Neighborhood Park, and the Alberson Fire Road and other dirt roads and trails provide access within the area.
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Zuniga Ridge
A gift from the Zuniga family enabled the preservation of this open space area, which is visible from the Ventura Freeway and Thousand Oaks Boulevard.
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