Brentwood, California

Liberty High School is located in Brentwood, California, United States. Liberty High School is a comprehensive 9–12 grade high school serving approximately 2800 students. It was founded in 1902 as Liberty Union High School.

Rancho Los Méganos was a 13,316-acre (53.89 km2) Mexican land grant in the southwestern Sacramento-San Joaquin Delta region of present-day Contra Costa County, California. It was given in 1835 by Governor José Castro to José Noriega. "Méganos" means "sand dunes" in Spanish. Rancho Los Méganos extends eastward from present-day Antioch along the San Joaquin River to the Old River. The rancho lands included present-day Oakley, Knightsen, and Brentwood.

Sand Hill is a former unincorporated community now annexed to Oakley in Contra Costa County, California. It lies at an elevation of 43 feet (13 m). It is west of Knightsten on the far edge of the county.

Freedom High School is located in Oakley, California, United States. It opened in 1996 on the grounds of Liberty High School, before moving to the new campus, as a part of the Liberty Union High School District. The current Liberty Union High School District contains Freedom, Liberty, Heritage, and Independence High Schools.

Knightsen is a census-designated place (CDP) in Contra Costa County, California, in the United States. As of the 2010 census, the CDP population was 1,568, up from 861 reported in the 2000 census.

The Stone House of John Marsh is a historic stone house in Contra Costa County, California, built in 1855–56. It is now included in the newly designated Marsh Creek State Park. It has not been officially opened to the public because of safety concerns, but restoration began in 2006 and is continuing as of October 2017.

Oakley Union Elementary School District is a public school district in Contra Costa County, California, United States. Oakley Union oversees nine public schools, including seven elementary schools (KG–5) and two middle schools (6–8).

Heritage High School is a high school in Brentwood, California, United States. It opened on August 1, 2005, with a freshman and sophomore class.

Marsh Creek State Historic Park is a California state park in east Contra Costa County, California, United States. It was named as the newest California State Park on January 27, 2012. The newly named park (formerly called the Cowell Ranch/John Marsh State Park) contains 3,659 acres (1,481 ha; 5.717 sq mi) and is about 3.3 miles (5.3 km) south of downtown Brentwood. The park is named for California pioneer John Marsh (1799–1856), who was a doctor, rancher, landowner and the first non-Hispanic European to settle in what is now Contra Costa County, California. Marsh was the first medical doctor in California, the first Harvard graduate in the territory, the first to introduce a number of new crops, and one of the most influential men in the establishment of California statehood.Marsh, a widower, was a native of Massachusetts, who had previously lived in Minnesota, Illinois, Wisconsin, Missouri and New Mexico before settling in Los Angeles, California. In 1838, he acquired Rancho Los Meganos in northern California. The ranch covered over 80 square miles (21,000 ha), and extended over 8 miles (13 km) to the San Joaquin River, where Marsh's Landing was built (near present-day Antioch, California). The park covers a portion of this former rancho. Marsh reportedly paid $300 in cowhides for the land. The John Marsh House was added to the National Register of Historic Places (Reference Number 71000136) under Criteria A, B and C on October 7, 1971.The park is significant for many reasons. It represents the Mexican period in California history, it was an important site for the Miwok and other Native American people, it was home of the vaqueros, it was the end point of the California Trail (the first party over the Sierra Nevada came directly to the John Marsh rancho at his invitation), and its archaeological site has produced artifacts going back 7,000 years. It has been identified by the Sacramento Archaeological Society as being the most important archaeological site in the California State Park system.

The Contra Costa Canal is a 47 mi (76 km) aqueduct in the US state of California. Its construction began in 1937, with delayed completion until 1948 due to World War II shortages in labor and materials. A portion of the canal's right of way has been developed as the Contra Costa Canal Regional Trail, a biking and walking trail, and is managed by the East Bay Regional Park District.

Oakley is a city in Contra Costa County, California, United States. It is within the nine-county San Francisco Bay Area. The population at the 2020 United States census was 43,357. Oakley was incorporated in 1999, making it the newest incorporated city in Contra Costa County.

Oakley station is a planned station that will be a stop on Amtrak California's San Joaquin service. It is located near Main Street between O'Hara Avenue and 2nd Street. The station was partially funded by a 2018 grant from California's Transit and Intercity Rail Capital Program. Construction was expected to be completed by 2022. As of March 2023, the station is expected to open in the third quarter of 2024, replacing Antioch–Pittsburg station.