Five Notable Historical Sites and Places to See in and Around Ventura County

In the mid 1850s, the area that we call Ventura County was the southern part of Santa Barbara County.  By 1873, Ventura County officially split off from Santa Barbara County and by the turn of the century the cities of San Buenaventura (or Ventura as we know it), Port Hueneme, Santa Paula, Nordhoff (now Ojai), Simi, Somis, Moorpark and Oxnard came on board. Camarillo and Thousand Oaks were late bloomers, incorporating in 1964.

There are hundreds of historical things to see around Ventura County, dozens of which are covered here on Conejo Valley Guide. Let's take a look at five neat places to see Ventura County history to additional information.

Strathearn Historical Park and Museum in Simi Valley has a notable collection of structures and artifacts from Simi's early days. The park is jointly operated by the Rancho Simi Recreation and Park District and Simi Valley Historical Society.

The Museum of Ventura County opened its Agriculture Museum in Santa Paula in September 2011. The museum is housed in the historic 1888 restored mill building. In its 12,000 sq ft, you'll find an extensive collection of vintage farm equipment, tools, machines, clothing, photos and artifacts.

Probably my personal favorite local historical venue, just outside the Ventura County border, is the Leonis Adobe Museum in Calabasas, adjacent to Sagebrush Cantina. If you've never been there, do stop by and bring the kids, as you'll be amazed at how much there is to see in this somewhat hidden location. The kids will love visiting with the collection of farmyard animals, there are lots of historical artifacts, including quite an impressive collection of vintages wagons/carriages and much more.

Bull-ying can be a good thing...at the Leonis Adobe in Calabasas.

Bull-ying can be a good thing...at the Leonis Adobe in Calabasas. Fun to watch.

The Camarillo Ranch House is a 6,000 sq ft Victorian home built by Adolfo Camarillo, son of city namesake Juan Camarillo, in 1892. The house is owned by the City of Camarillo and the nonprofit Camarillo Ranch Foundation maintains the property, which has been restored to look how it looked in the 1904 to 1930 time frame. Take a docent-led tour of the house and enjoy one of the most beautiful venues for outdoor weddings and events in Ventura County...immaculate grounds and stunning, mature trees at this peaceful location that is right off the 101.

Last but not least is the Stagecoach Inn Museum in Newbury Park, home to a replica of the 1876 Grand Union Hotel. Take a docent-led tour, check out the quaint gift shop and tour the grounds, which includes a Chumash Indian village, rose garden, nature trails and more. The site is home to a historic Sycamore Tree that is over 250 years old. Adjacent to the museum is a park with some uniquely designed playground equipment.

For hundreds and hundreds of things to do, check out the Do Something section of CVG.

M*A*S*H Site at Malibu Creek State Park

Malibu Creek State Park is a wilderness wonderland, stretching over 8,000 acres in Calabasas, Agoura and Malibu. The park is a great place for hiking, biking, camping, picnicking and exploring. If you do plan to explore the park, be sure to check out the old M*A*S*H (or "MASH" television series set!

Produced by 20th Century Fox, M*A*S*H was filmed from September 1972 to February 1983 over 11 seasons and 256 episodes on CBS. Exterior scenes were filmed at what is now Malibu Creek State Park. Over the years, the ambulance and other props left at the old site became less and less visible as the surrounding brush became overgrown.

In 2007, the set was restored with a shaded picnic area, military vehicles, ambulance, helipad and signpost. Check out the photos below, but, better yet, visit it in person! For more pictures and extensive information about the M*A*S*H set and Malibu Creek State Park, visit www.malibucreekstatepark.org.

The M*A*S*H site is easily accessible from the main parking lot at Malibu Creek State Park, mostly on wide fire roads, with one significant hill, a bridge crossing and one somewhat rocky trail section. The path is about 2 1/2 miles each way, so it would be a good idea to bring drinks and snacks.

M*A*S*H: The Complete Series + Movie

Hiking and Exploring in Rancho Sierra Vista/Satwiwa in Newbury Park

Entrance to Rancho Sierra VistaSatwiwa at Lynn Road and Via Goleta in Newbury Park

Located on the western edge of the Santa Monica Mountains National Recreation Area, Rancho Sierra Vista/Satwiwa is accessible in Newbury Park at the intersection of Lynn Road and Via Goleta. This area spans from Potrero Road on the north and connects to Point Mugu State Park on the south.

Ranching in the area dates back to the early 1800s, when Spanish soldiers were granted 48,672 acres of land, "Rancho El Conejo," which through the years was subdivided and sold to other landowners. One of these ranchers was Carl Beal, who in 1937 named the area Rancho Sierra Vista "Mountain View Ranch." The last private landowner in the area was Richard Danielson, whose family farmed and ranched the area for 32 years. Danielson donated 5,585 acres of the ranch to the State of California, which became part of Point Mugu State Park, and sold 850 acres, including the horse ranch, to the National Park Service in 1980.

Sign at Danielson Monument accessible via Danielson Road/Old Boney Trail.

The Satwiwa Native American Indian Natural Area is a bike/horse free area within Rancho Sierra Vista/Satwiwa of roughly 60 acres. Located on the northwest corner of this area, just a short walk from visitor parking, is the Satwiwa Native American Culture Center.

The Culture Center is staffed from 9 a.m. to 4 p.m. most weekends with a park ranger or other staff. It is a small building that also hosts a variety of educational Chumash and wildlife items. NPS BROCHURE AND TRAIL MAP

Learn more about RSV at www.nps.gov/samo/planyourvisit/rsvsatwiwa.htm.

The area is a popular destination for hikers with a variety of well maintained trails. Note, however, that bicycles and horses are not allowed in the "Satwiwa Natural Area" section (see map below).

Map excerpt courtesy of National Park Service.

The Satwiwa Loop Trail is an easy, 2 mile trail that starts at the Culture Center through grasslands, past the old windmill and back around, with several extensions for those looking to do a little more.

There's the Lower Loop Trail and the Upper Loop Trail that is a bit of a zig-zaggy trail with wooden footings placed by volunteers to help hikers navigate. The Upper Loop Trail runs past the "Old Windmill" pictured below.

Satwiwa Lower Loop sign at intersection of Danielson Road trail.

The old windmill at the northeast corner of the Satwiwa Loop Trail (Upper Loop). (Windmill was knocked down by high winds in December 2016 and is still down as of MAY 2024).

You can also park at the Wendy and Potrero trailhead and walk to the Culture Center via the Wendy Trail, about a mile each way.

Wendy Trail trailhead at the intersection of Wendy and Potrero in Newbury Park

It is pretty dry in here most of the year but after the winter/spring rains, the green stages a comeback.

Another trail to explore is the 1 mile Ranch Overlook Trail that takes you from just west of the Satwiwa Native American Indian Culture Center, up a hill (where you can indeed look down toward the old ranch area, parking area and restrooms) to the main entrance and to the Palomino Trail in the Rancho Potrero Open Space.

Ranch Overlook Trail

One of my favorite trails in Rancho Sierra Vista/Satwiwa is the Hidden Valley Overlook Trail. This challenging, fairly steep trail branches off from the Satwiwa Loop Trail on the southeast, past the bench at the Upper Sycamore Canyon Overlook, via the Boney Mountain Trail/Danielson Road.

The popular bench at Upper Sycamore Canyon Overlook. Photo taken April 4, 2014, approximately 11 months after the devasting Springs Fire of 2013.

Roughly 700 feet past the Upper Sycamore Canyon bench is a juncture where you can either veer right into Point Mugu State Park and the Boney Mountain Wilderness, where you can walk down, over a stream (or a dry stream bed as the case may be), towards the popular "waterfall" (which in recent years has been not much more than a trickle) and the Danielson Monument. CLICK HERE for details.

If you veer left at the juncture, you'll see the Hidden Valley Overlook trail sign.

The trail is steep and rocky and reaches an end point in about half a mile. If you are up to the challenge, you will be rewarded with sweeping views of Newbury Park, the Channel Islands, Sycamore Canyon and Boney Mountain.

Views from halfway up the Hidden Valley Overlook Trail towards the Satwiwa Native American Indian Natural Area

At the end of the trail is the Hidden Valley overlook, where you will be able to peek into the not-so-hidden-anymore Hidden Valley and its peaceful ranches. As a final reward for your effort, it's all downhill the way back. Be sure to wear solid hiking shoes as the trails are a bit technical.

Peek at Hidden Valley at the end of the Hidden Valley Overlook Trail.

View of Santa Cruz Island, one of the Channel Islands, from Hidden Valley Overlook trail

To learn more, visit the Anthony C. Beilenson Visitor Center at 26876 Mulholland Highway, Calabasas or visit www.nps.gov/samo or call 805.370.2301.

Dogs are allowed in Rancho Sierra Vista/Satwiwa as long as they are on a leash no longer than 6 feet. But please, pick up after your pet. Dogs are not allowed in the Point Mugu State Park / Boney Mountain Wilderness back country trails, though they are allowed on paved roads, such as the Big Sycamore Canyon Trail road.

The Twin Ponds Conservation Area in the Conejo Open Space is Protected Land

The Twin Ponds Conservation Area in Dos Vientos is part of the open space lands of the Conejo Open Space Conservation Agency and is protected by a conservation easement to the California Department of Fish and Game.

July 2014

January 2015

May 2016

The ponds were originally constructed in the 1920s as part of the irrigation system for agricultural and cattle ranching operations at Dos Vientos Ranch. Today they serve as important habitat for Two Striped Garter Snakes and larger animals such as deer, bobcat, coyote and mountain lions that depend on a reliable source of water. Migrating waterfowl are occasionally abundant, especially in winter.

COSCA and Fish & Game ask that we enjoy this scenic area but protect the ponds for the future and ask that we do not enter the water or allow dogs/horses to enter the water, disturb or remove any animal or plant or place any plants or animals, including fish, into the ponds.

To explore the ponds, take the Vista Del Mar Trail from one of several access points in the Dos Vientos area, including the corner of Via Ricardo and Via Rincon and the corner of Rancho Dos Vientos and Via El Cerro. This is a fun little hike to take the kids on and the ponds are only about a mile from the Via Ricardo/Via Rincon trailhead.

Twin Ponds? What ponds? The ponds are completely dried up as of August/September 2016.

January 2024

Late March 2024 - looking great!

Evolution of the Conejo Grade in Ventura County Over the Last 100 Years

Horseshoe shaped section of the Conejo Grade in the 1920s.

The Conejo Grade is the section of Highway 101 that connects the Conejo Valley with Camarillo. It is a four mile stretch of freeway with a significant 7% grade.

Going down the Conejo Grade from Newbury Park to Camarillo today.

At 3:30 p.m. on the afternoon of May 1, 1937, a newly upgraded and realigned Conejo Grade premiered after a day of celebration commencing at the ranch of Adolfo Camarillo. Camarillo, the namesake of what in 1964 became the City of Camarillo, donated the right of way to enable the grade to be realigned. Actor Leo Carrillo entertained guests at Camarillo's ranch at the bottom of the grade.

Grand opening of the newly realigned Conejo Grade on May 1, 1937.

The old Conejo Grade was constructed by the California Highway Commission in 1914-1915. The previous route had 49 twists and turns, making it somewhat hazardous to drive (albeit somewhat less steep than the current grade). The newly aligned Conejo Grade cut the number of curves by 75%.

Another view of the Conejo Grade before it was realigned in 1937.

The new 1937 Conejo Grade cost a total of $570,000, which is less than the average cost of a house in the Conejo Valley today! Over a year and a half, the project employed about 100 workers who put in over 272,000 hours, excavating over 800,000 cubic yards of mostly hard rock. Talk about rock stars!

In the 1950s and 1960s, Caltrans further widened and improved Highway 101 over the Conejo Grade.

Several decades later, as Ventura County grew and the cities of Camarillo and Thousand Oaks incorporated in 1964, Caltrans continued to widen and improve the highway to what it is today.

Source for historical information: "California Highways and Public Works" (May 1937) - official journal of the State of California Division of Highways, Department of Public Works.

Special thanks to the Pleasant Valley Historical Society for providing historic photos.

Then and Now: The Dairy Farm at Camarillo State Hospital

In 1932, the State of California purchased 1,760 acres of the Lewis Ranch and built the Camarillo State Mental Hospital, which operated from 1936 to 1997 and at one point treated as many as 7,000 patients in the mid 1950s.

Located on the parcel was a dairy farm that produced crops and housed livestock that fed the hospital community. The farm was disbanded in the 1960s and has been left in a state of disrepair, falling prey over the decades to vandals and coined "Scary Dairy."

Here are some "then and now" photos of the most prominent elements of the dairy farm.

The hay barn at Camarillo State Hospital in the 1940s (CSUCI John Spoor Broome Library historic photo collection)

The hay barn today.

The dairy at Camarillo State Hospital in the mid-1950s. (CSUCI John Spoor Broome Library historic photo collection)

The dairy building today, fenced off, covered with graffiti. 

Inside the hay barn - undated photo. (CSUCI John Spoor Broome Library historic photo collection)

Inside of hay barn - more recently.

Hiking to the Waterfall in Pt Mugu State Park from Rancho Sierra Vista/Satwiwa

One of the most popular hikes in the Rancho Sierra Vista/Satwiwa open space in Newbury Park is to a small waterfall in the adjacent Boney Mountain Wilderness. The hike is about 3 1/2 miles round-trip from the Satwiwa Native American Indian Culture Center and is a moderate hike that can be done by all ages.

Keep in mind that in drought years, there’s sometimes not more than a trickle flowing down this waterfall, while in rainier years like 2023-2024, the waterfall is quite active. In either case, it’s a fun hike to do.

You have two primary options for where to start the hike. You can drive into the Rancho Sierra Vista park entrance on Via Goleta in Newbury Park and park in a lot that is a brief walk to the Culture Center, or you can park at the Wendy Drive and Potrero Road trailhead and add an another two miles, round trip, to your adventure.

The entrance to Rancho Sierra Vista/Satwiwa at Via Goleta, 1 mile west of Reino Road.

The trailhead where Wendy Road ends at Potrero Road in Newbury Park

The Satwiwa Native American Indian Culture Center is a small building open from 9am to 4pm on weekends (as of April 2024) where you can learn about native Chumash items and local wildlife.

Next to the Culture Center, you'll see multiple paths, all of which can get you to your destination, but the most direct path is the Satwiwa Loop Trail seen on the left, which crosses through a meadow that can be quite green and beautiful in late Winter/early Spring and dry and brown the rest of the year. An alternate route is on the right of the picture above - the Big Sycamore Canyon Trail (paved road) to the Boney Mountain Trail, where you'll take a left.

Satwiwa Loop Trail section that takes you diagonally through the meadow. Seen here when it is nice and green.

At the end of the meadow, continue straight up a fairly steep hill, where on the right hand side you'll see the Sycamore Canyon Overlook bench shown below.

bench on sycamore canyon overlook

Hike up the moderately steep and rocky path up the hill behind the bench and you'll reach another fork in the road. If you veer left at this juncture you'll be on the Hidden Valley Overlook Trail within Rancho Sierra Vista/Satwiwa. Stay to the right and you'll be entering the Boney Mountain Wilderness area within Point Mugu State Park.

Sign that shows you the Hidden Valley Overlook Trail is on the left.

Veering right into the State of California managed Pt Mugu State Park; as you can see, dogs are not allowed in the back country area of the park.

This trail is referred to as Danielson Road, named after the last private owner of these lands. The path down into the canyon is seen below (taken from a higher point en route to the Danielson Monument).

View of the initial section of Danielson Road trail down into the canyon; this is the path you will be taking towards the waterfall.

Danielson Road is a bit on the steep side but I see folks young and old walking up and down this section all the time. Seen here in very dry conditions.

THIS IS THE OLD SIGN, WHEN IT WAS CALLED DANIELSON ROAD (PRIOR TO 2024)

NEW SIGN IN 2024 SHOWING THE “OLD CABIN TRAIL” INSTEAD OF DANIELSON ROAD.

After .4 mile, you will reach the bottom of the canyon and see the sign above, the final sign indicating you are on your way to the Waterfall Trail. Then you will cross a creek bed, which can have water in it after the rains. The photo taken below in January 2015 shows minimal moisture, making it easy to cross. Some years you may have to rock hop your way a bit over the creek.

Creek bed crossing on the way to the waterfall IN 2015

Creek Crossing in April 2024.

After you cross the creek, the remainder of the trail to the waterfall is single track. Be careful not to come in contact with poison oak often seen on the sides of the trails. For this reason, I would generally not recommend strollers be taken up here.

Soon you will reach the final fork in the road. Go straight and soon you will be at the waterfall. To the right, the Old Cabin Trail (formerly Danielson Road Trail) continues upward to the Danielson Monument.

the waterfall in april 2024.

OTHER HIKES AND TRAILS IN AND AROUND VENTURA COUNTY