Sage Ranch Park

Santa Susana (Spanish for "St. Susan") is a former railroad town located mostly within the City of Simi Valley. A small portion of the community, outside the Simi Valley city limits to the south of the Ventura County Metrolink rail line, is an unincorporated area and census-designated place (CDP). The community is in the eastern part of the Simi Valley. The town by the Santa Susana Mountains in the Simi Valley was founded in 1903, shortly after the Southern Pacific Company built the Santa Susana Depot. It is also spelled Santa Susanna, while it is currently more commonly referred to as the Santa Susana Knolls, which is the officially designated name, or the Simi Knolls. The name of Santa Susana is now more generally applied to a larger area at the very east end of the Simi Valley (often called east of East Simi Valley) in easternmost Ventura County, which was the name of the early settlement located at Tapo Street and East Los Angeles Avenue that is now within the city limits. The historic Santa Susana Depot was located there before being moved farther east along the coast route railroad and made into a museum. The Simi Valley train station opened in 1993 about midway between the historic site and the museum location next to Santa Susana Knolls. The 2010 United States census reported the Santa Susana CDP's population as 1,037. It is a sparsely populated rural area with rustic housing and no set-houses, in a hilly and relatively forested part of the valley.The area was inhabited by the Chumash Indians as early as 500 AD and there have been numerous Chumash artifacts found in the area, in addition to the pictographs in Burro Flats Painted Cave. In the 1920s, the Knolls became home to brothels and also a religious cult. During the late 1960s Charles Manson and the Manson Family partially lived at Spahn's Movie Ranch. During the 1950s and '60s, the Corriganville Movie Ranch and other areas was utilized as movie sets for Western movies. Films and TV-series filmed here includes Gunsmoke, Bonanza, The Lone Ranger, Adventures of Superman, The Adventures of Robin Hood (1938), The Three Musketeers, Tales of the Texas Rangers, Billy the Kid Versus Dracula, Fort Apache, Star Trek, Wagon Train, and hundreds of other mostly Western-inspired movies and TV-shows.The rural Santa Susana is home to numerous species of native wildlife, including large amounts of snakes, coyotes, hawks and mountain lions.

Santa Susana Depot is a train station building located near the Santa Susana Pass in Simi Valley, California. Originally located on Los Angeles Avenue at Tapo Street, the depot opened in 1903. The station was named after the Santa Susana Mountains at the east end of the Simi Valley. The Southern Pacific Railroad used the double-"N" spelling of Susanna on the depot sign facing west, and the single-"N" spelling of Susana on the sign facing east. The Santa Susana Tunnel opened the next year, reducing the distance and transit time between Montalvo and Burbank on the Coast Route linking Los Angeles and San Francisco. Plans and construction for the building were based on Southern Pacific Railroad standard design Two Story Combination Depot No. 22. The depot served the community of Rancho Simi as a passenger station, telegraph office, and freight depot where farmers could deliver crops for shipping and pick up farming equipment delivered by the railroad. Due to lessening passenger traffic and changes in the shipment of freight, Southern Pacific closed the station in the early 1970s, leaving Santa Susana Depot empty and destined for demolition. The County of Ventura purchased the depot from the railroad for $1.06. In May 1975 the building was divided into three parts and moved by truck to county property two miles east of the site it was built on. The County of Ventura designated the building Landmark #29 in January, 1976.The current Simi Valley station for Amtrak's Pacific Surfliner and Metrolink's Ventura County Line is located one mile east of the original Tapo Street depot location.

The Santa Susana Field Laboratory (SSFL), formerly known as Rocketdyne, is a complex of industrial research and development facilities located on a 2,668-acre (1,080 ha) portion of Southern California in an unincorporated area of Ventura County in the Simi Hills between Simi Valley and Los Angeles. The site is located approximately 18 miles (29 km) northwest of Hollywood and approximately 30 miles (48 km) northwest of Downtown Los Angeles. Sage Ranch Park is adjacent on part of the northern boundary and the community of Bell Canyon is along the entire southern boundary.SSFL was used mainly for the development and testing of liquid-propellant rocket engines for the United States space program from 1949 to 2006, nuclear reactors from 1953 to 1980 and the operation of a U.S. government-sponsored liquid metals research center from 1966 to 1998. Throughout the years, about ten low-power nuclear reactors operated at SSFL, (including the Sodium Reactor Experiment, the first reactor in the United States to generate electrical power for a commercial grid, and the first commercial power plant in the world to experience a partial core meltdown) in addition to several "critical facilities" that helped develop nuclear science and applications. At least four of the ten nuclear reactors had accidents during their operation. The reactors located on the grounds of SSFL were considered experimental, and therefore had no containment structures. The site ceased research and development operations in 2006. The years of rocket testing, nuclear reactor testing, and liquid metal research have left the site "significantly contaminated". Environmental cleanup is ongoing. The public who live near the site have strongly urged a thorough cleanup of the site, citing cases of long term illnesses, including cancer cases at rates they claim are higher than normal. On 30 March 2018, a seven-year-old girl living in Simi Valley died of neuroblastoma, prompting public urging to thoroughly clean up the site. Experts have said, however, that there is insufficient evidence to identify an explicit link between cancer rates and radioactive contamination in the area.

The Energy Technology Engineering Center (ETEC), was a government-owned, contractor-operated complex of industrial facilities located within the 2,850-acre (11.5 km2) Santa Susana Field Laboratory (SSFL), Ventura County, California. The ETEC specialized in non-nuclear testing of components which were designed to transfer heat from a nuclear reactor using liquid metals instead of water or gas. The center operated from 1966 to 1998. The ETEC site has been closed and is now undergoing building removal and environmental remediation by the U.S. Department of Energy.

The Sodium Reactor Experiment was a pioneering nuclear power plant built by Atomics International at the Santa Susana Field Laboratory near Simi Valley, California. The reactor operated from 1957 to 1964. On July 12, 1957 the Sodium Reactor Experiment became the first nuclear reactor in California to produce electrical power for a commercial power grid by powering the nearby city of Moorpark. In July 1959, the reactor experienced a partial meltdown when 13 of the reactor's 43 fuel elements partially melted, and a controlled release of radioactive gas into the atmosphere occurred. The reactor was repaired and restarted in September 1960. In February 1964, the Sodium Reactor Experiment was in operation for the last time. Removal of the deactivated reactor was completed in 1981. Technical analyses of the 1959 incident have produced contrasting conclusions regarding the types and quantities of radioactive materials released. Members of the neighboring communities have expressed concerns about the possible impacts on their health and environment from the incident. In August 2009, 50 years after the occurrence, the Department of Energy hosted a community workshop to discuss the 1959 incident.

Simi Valley station is a passenger rail station in the city of Simi Valley, California. Amtrak's Pacific Surfliner from San Luis Obispo to San Diego and Metrolink's Ventura County Line from Los Angeles Union Station to East Ventura stop here. Simi Valley station is served by ten Amtrak Pacific Surfliner trains (five in each direction) every day and two Coast Starlight trains (one in each direction), with departures evenly spaced throughout the day. Sixteen Metrolink Ventura County Line trains (eight in each direction) serve the station each weekday, running during peak hours in the peak direction of travel. On weekends, four Metrolink Ventura County Line trains (two in each direction) serve the station. Metrolink passengers also have access to all Pacific Surfliner trains through a codesharing arrangement with Amtrak.In Fiscal Year 2022, 26,689 passengers boarded or detrained at Simi Valley station.

Corriganville Movie Ranch was a working film studio and movie ranch for outdoor location shooting, as well as a Western-themed tourist attraction. The ranch, owned by actor and stuntman Ray "Crash" Corrigan, was located in the foothills of the Santa Susana Mountains in the Santa Susana Pass area of Simi Valley in eastern Ventura County, California. It was destroyed by wildfires in 1970 and 1979. The site is currently a public park in the City of Simi Valley, called Corriganville Park, and operated by Rancho Simi Recreation and Park District.

Bell Canyon is an unincorporated community in eastern Ventura County, California, United States. Bell Canyon is a gated community in the Simi Hills with the main access through the Los Angeles community of West Hills and the western San Fernando Valley. Bell Canyon sits at an elevation of 1,368 feet (417 m). The 2020 census reported Bell Canyon's population was 1,946. For statistical purposes, the Census Bureau has defined Bell Canyon as a census-designated place (CDP). According to a 2016 study, Bell Canyon is the seventh wealthiest community in the state of California with an annual median income of $230,000.

Simi Valley High School (SVHS) is a public high school in Simi Valley, California. The school is part of the Simi Valley Unified School District and is located on the east side of the city.

Chatsworth Peak is a peak in the Simi Hills overlooking (to the east) Chatsworth and the western San Fernando Valley, in Los Angeles, Southern California. It is southwest of Santa Susana Pass and north of the Chatsworth Reservoir. Chatsworth Peak has an elevation of 2,313 feet (705 m).Nearby are Simi Peak in the western Simi Hills, and Oat Mountain in the Santa Susana Mountains.

Atomics International was a division of the North American Aviation company (later acquired by the Rockwell International company) which engaged principally in the early development of nuclear technology and nuclear reactors for both commercial and government applications. Atomics International was responsible for a number of accomplishments relating to nuclear energy: design, construction and operation of the first nuclear reactor in California (1952), the first nuclear reactor to produce power for a commercial power grid in the United States (1957) and the first nuclear reactor launched into outer space by the United States (1965).Atomics International undertook the development of nuclear reactors soon after being established: a series of commercial nuclear power reactors beginning with the Sodium Reactor Experiment (SRE) and a range of compact nuclear reactors culminating with the Systems for Auxiliary Nuclear Power SNAP-10A system. Both efforts were successful, despite nuclear accidents at the Santa Susana Field Laboratory, but overall interest in nuclear power steadily declined. The division transitioned to non-nuclear energy-related projects such as coal gasification and gradually ceased designing and testing nuclear reactors. Atomics International was eventually merged with another division (Rocketdyne division) of the same parent company (Rockwell International). As of 2010, all of the Atomics International facilities, except for the few remaining facilities located in the Area IV test area at the Santa Susana Field Laboratory (SSFL), have been demolished, cleaned and reused, or awaiting final cleanup.

The Brandeis-Bardin Campus of American Jewish University is a Jewish retreat located since 1947 in the northeastern Simi Hills, in the city of Simi Valley, California. Formerly known as the Brandeis-Bardin Institute, it is used for nondenominational summer programs for children, teens, and young adults.