Lake Chabot Regional Park

The San Leandro Hills are a low mountain range of the Southern Inner California Coast Ranges System, located on the eastern side of the San Francisco Bay. Geologically, they are a southern continuation of the Berkeley Hills on the north. They run along the southeastern city limits of Oakland, extending southeastward above the city of San Leandro and the unincorporated community of Castro Valley. San Leandro Creek drains the canyon along the eastern slope of the hills.

Chabot Park is located in the Southeastern section of the Oakland Hills. The neighborhood has a population of around 2,845. Chabot Park is in Alameda County. The neighborhood is adjacent to Knowland State Park and the Oakland Zoo.

Lake Chabot is a man-made lake covering 317 acres (1.3 km2) in Alameda County, California, United States. Part of the lake lies within Oakland city limits, but most of it lies in unincorporated Castro Valley, just east of San Leandro. It was formed by the damming of San Leandro Creek. The lake was completed in 1875 to serve as a primary source of water for the East Bay. The California Office of Environmental Health Hazard Assessment (OEHHA) has developed a safe eating advisory for Lake Chabot based on levels of mercury found in fish caught here.

Redwood High School is an alternative/continuation public high school in Castro Valley, California, United States. It is the only alternative/continuation high school in Castro Valley, and is one of only two high schools in Castro Valley, the other being Castro Valley High School. Redwood High School was remodeled from 2006 to 2008.

Anthony Chabot Regional Park is a regional park in Oakland, Alameda County, California in the United States. It is part of the East Bay Regional Park District system, and covers 5,067 acres (2,051 ha) in the San Leandro Hills adjacent to Oakland, San Leandro and Castro Valley. Popular activities include hiking, cycling and horseback riding. A gun range operated by the Chabot Gun Club was shut down in 2016, following complaints about pollution. The terrain of the park is often steep, consisting of grasslands, chaparral, and eucalyptus groves.

John George Psychiatric Hospital, previously John George Psychiatric Pavilion, also known as John George Psychiatric Emergency Room, John George Hospital or John George, is a psychiatric hospital located in San Leandro, in Alameda County, California. It is operated by the Alameda Health System. It is located near Fairmont Hospital and the county Juvenile Justice Center. It opened in 1992 and was named after County Supervisor John George to honor his advocacy for mentally ill people. It has an 80-bed capacity. In November 2003, a doctor at the facility, Erlinda Ursua, died there and a patient, a 38-year-old female was charged with murder. The female patient pled not guilty in 2005. No criminal charges were later filed.

Kindred Hospital - San Francisco Bay Area is a 99-bed long-term acute care facility in San Leandro, California, US. The hospital is operated by Kindred Healthcare based in Louisville, Kentucky.

Upper San Leandro Reservoir is an artificial lake in Alameda County and Contra Costa County, California which provides water for the East Bay Municipal Utility District (EBMUD). It is impounded by the earth-filled San Leandro Dam on San Leandro Creek, located at the southeast end of the lake. Although it receives some runoff from its local watershed, most of the water is imported via the Mokelumne Aqueduct. The reservoir has a capacity of about 42,000 acre-feet (52,000,000 m3), though its normal volume is about 30,250 acre-feet (37,310,000 m3). The reservoir name includes "Upper" to distinguish it from Lake Chabot, several miles downstream, which was originally known as "Lower San Leandro Reservoir".

The 1868 Hayward earthquake occurred in the San Francisco Bay Area, California, United States on October 21. With an estimated moment magnitude of 6.3–6.7 and a maximum Mercalli intensity of IX (Violent), it was the most recent large earthquake to occur on the Hayward Fault Zone. It caused significant damage and a number of deaths throughout the region, and was known as the "Great San Francisco earthquake" prior to the 1906 San Francisco earthquake and fire.

Area codes 510 and 341 are telephone area codes in the North American Numbering Plan (NANP) serving much of the East Bay in the U.S. state of California. They cover parts of Contra Costa County and western Alameda County, including the city of Oakland, but excluding Dublin, Livermore, Pleasanton, and Sunol. Area code 510 was established on September 2, 1991, in a split from area code 415. On March 4, 1998, the inland portion of the East Bay was split off as area code 925. The dividing line followed the Berkeley Hills; almost everything west of the hills stayed in 510, while everything east of the hills transferred to 925. In response to projections that 510 would exhaust in the second quarter of 2019, the California Public Utilities Commission approved the addition of an overlay area code, 341, to serve the East Bay. The first central office codes in 341 became available on July 22, 2019.Ten-digit dialing became mandatory in the East Bay a month earlier, on June 22.

The Dunsmuir House and Gardens (also known by the name The Dunsmuir-Hellman Historic Estate and previously known as Oakvale Park) is located in Oakland, California on a 50-acre (200,000 m2) site. The Dunsmuir House has a neoclassical-revival architectural style and is listed in the U.S. National Register of Historic Places. It is now used primarily for weddings, receptions, business gatherings and historical reenactment events.

Joseph Knowland State Arboretum and Park is a park located in the Grass Valley neighborhood of Oakland, California. It was formerly a state park, and is now the property of the City of Oakland. The Oakland Zoo occupies the developed western lowlands of the park, just off I-580.