Holden High School (California)

Orinda Academy (OA) is a secondary school located in Orinda, California, United States.

Orinda station is a Bay Area Rapid Transit station in Orinda, California. The station has an island platform in the center median of State Route 24. Service at the station began on May 21, 1973, following the completion of the Berkeley Hills Tunnel, which connects it to Rockridge station. An abstract mural by Win Ng, partially covered by advertisements, is located in the fare lobby.In 2008, BART added solar panels over parking areas at Orinda station, as well as the Richmond and Hayward maintenance yards. The $3.8 million project was expected to provide all station electrical needs during daylight hours.The elevator to the platform is outside of the paid area. BART plans to add a dedicated faregate for the elevator in 2022.

Orinda is a city in Contra Costa County, California, United States. The city's population as of the 2020 census is estimated at 19,514 residents.

The Charles W. Merrill House is a 6,000-square-foot residence built in 1938 and located in Orinda, California. Designed by regionally prominent architect Walter H. Ratcliff, of Berkeley, California for mining engineer and San Francisco businessman Charles Washington Merrill.

On October 31, 2019, a mass shooting occurred in Orinda, California, during a house party that left five people dead and four others injured.

The Maynard Buehler House in Orinda, California is a 4,000 square feet (370 square meters) Usonian home designed by Frank Lloyd Wright in 1948 for Katherine Z. "Katie" and Maynard P. Buehler. Since 2016 the house has been used as a venue for weddings, after being featured in Vogue magazine.

Glorietta is a former unincorporated community, now annexed to Orinda in Contra Costa County, California. It lies at an elevation of 597 feet (182 m).

Briones Reservoir is an open cut terminal water storage reservoir located in western Contra Costa County, in the East Bay region of the San Francisco Bay Area, California. It is owned and operated by the East Bay Municipal Utility District (EBMUD).

Robert Sibley Volcanic Regional Preserve is located in the Oakland Hills of the East Bay region of the San Francisco Bay Area, California. The park is part of the East Bay Regional Parks District (EBRPD), covers 928 acres (3.76 km2), and lies east of Oakland, partly in Alameda County and partly in Contra Costa County. It can be entered from Oakland via Skyline Boulevard, or from Contra Costa County via Old Tunnel Road.

Claremont Tunnel, also known as the Claremont Water Tunnel is a utility tunnel in Alameda County, in the U.S. state of California near the historic Claremont Hotel. The tunnel crosses the Hayward Fault and carries water for 800,000 EBMUD customers.

The Briones Valley is a major geological feature of Contra Costa County, California and runs between Mount Diablo and the county seat of Martinez. Also, it is the seat of many riparian watersheds, especially of Alhambra Creek.

The Redwood Valley Railway is a 15 in (381 mm) gauge miniature railway in Tilden Regional Park near Berkeley, California.