Monte Vista High School (Danville, California)

The Tassajara Formation is a geologic unit within the Livermore Valley of Northern California, United States. The formation surfaces only in the northern upland parts of the Livermore Valley and underlie the central part of the valley floor at a depth ranging from 250 feet (80 m) to 700 feet (200 m). The Tassajara Formation consists of sediments ranging from brown to gray mudstone, andesitic sandstone, conglomerate, and minor bentonitic and pumiceous tuff. In the northern San Ramon area, the Tassajara Formation underlies Quaternary valley fill material. The Bishop Subbasin is an aquifer that resides between two subsurface ridge formations of the Tassajara Formation in the northern extremity of the Amador Valley.

Diablo (Spanish for "Devil") is a census-designated place (CDP) in Contra Costa County, California, United States. The population was 1,158 at the 2010 census. It is located 2.5 miles (4.0 km) east-northeast of Danville.

The Town of Danville is located in the San Ramon Valley in Contra Costa County, California. It is one of the incorporated municipalities in California that use "town" in their names instead of "city". The population was 43,582 at the 2020 census. Since 2018, for five years in a row, Danville was named "the safest town in California".The Iron Horse Regional Trail runs through Danville. It was first a railroad that has been converted to an 80-foot (24 m) wide corridor of bike and hike trails as well as controlled intersections. Extending from Livermore to Concord, the trail passes through Danville.Danville is also home to the Eugene O'Neill National Historic Site, Village Theatre and Art Gallery, and the Museum of the San Ramon Valley.

The Danville Southern Pacific Train Depot in Danville, California is located at 205 Railroad Ave. and W Prospect Ave. It was built in 1891 on land donated by John Hartz which was erected when the Martinez line was extended south to San Ramon. The first train came on June 7, 1891. Passenger service ended in 1934. The Southern Pacific Railroad trains continued to pass through town with freight until 1978 when the line was abandoned. The building was sold in 1951 for the Danville Supply and Feed store. In June 1996, it was purchased and moved 100 yards. It was a passenger and freight station built to the design titled "Combination Station No. 22" out of standard designs of the Southern Pacific. In 2018 it houses the Museum of the San Ramon Valley. It lies along the Iron Horse Regional Trail, a rail trail formed from the converted Southern Pacific right of way.

San Ramon Valley High School is a four-year public high school located in the East Bay neighborhood of Danville, California, United States. It is a part of the San Ramon Valley Unified School District. It is a National Blue Ribbon school from the Blue Ribbon Schools Program as well as a California Distinguished School. Its rival is Monte Vista High School.

The Iron Horse Regional Trail is a rail trail for pedestrians, horse riders and bicycles in the East Bay Area in California. This trail is located in inland central Alameda and Contra Costa counties, mostly following a Southern Pacific Railroad right of way established in 1891 and abandoned in 1977. The two counties purchased the right of way at that time, intending to use it as a transportation corridor; the Iron Horse Trail was first established in 1986. In 2003, BART proposed to also use the right-of-way for a DMU line from Walnut Creek station to Tracy via Pleasanton.The trail passes through the cities of Pleasanton, Dublin, San Ramon, Danville, Alamo, Walnut Creek, Pleasant Hill and Concord. When completed, the trail will span from Livermore in central Alameda County to Suisun Bay at the northern edge of Contra Costa County, a distance of over 40 miles (64 km) connecting two counties and nine communities. The trail also directly connects to both the Dublin/Pleasanton and Pleasant Hill BART stations. The trail is maintained by the East Bay Regional Park District. It is a wheelchair accessible paved trail along with adjacent unpaved or soft trails in certain areas.The Iron Horse Regional Trail has several bridges over busy thoroughfares to help improve traffic flow; two notable ones cross over Ygnacio Valley Road in Walnut Creek and Treat Boulevard in Contra Costa Centre. Additional bridges are in the planning process. Despite initial skepticism, and even opposition, the trail is now a major transportation and recreation corridor. One million trips are made each year on the path.

Rancho San Ramon (St. Raymond Ranch in Spanish) was a 8,917-acre (36.09 km2) Mexican land grant in the northern San Ramon Valley of present-day Contra Costa County, California. Rancho San Ramon (Amador) was adjacent in the southern San Ramon Valley. It was given in 1833 by Governor Jose Figueroa to Mariano Castro and Bartolome Pacheco. Governor Figueroa granted Castro and Pacheco two square leagues of San Ramon Valley from the crest of the western ridge to the crest of the east. Castro had the northern square league, and Pacheco the southern.The grant included present-day Alamo, Danville and northern San Ramon.

The Athenian School is a selective college preparatory and boarding school located in Danville, California, United States. Athenian educates students in grades 6–12 on an approximately 75-acre (300,000 m2) campus at the base of Mt. Diablo, located in the San Francisco Bay Area in Northern California. Athenian was founded by Dyke Brown in 1965. Athenian is composed of roughly 170 students in the middle school (grades 6–8) and 360 students in the high school (9–12), which is also known as the upper school. Approximately 60 students and 18 teachers live on campus full-time. The average class size is 14. According to Niche, Athenian is ranked 147th on the 2020 list of Best Private High Schools in America and the number one school in Contra Costa County. Athenian is also ranked as the 40th best boarding school in the United States.Athenian holds an average SAT score of 1385 (out of 1600) and an average ACT score of 32. According to Boarding School Review, this gives Athenian the 8th highest SAT score of any boarding school in the United States.

Diablo Foothills Regional Park is a 1,060 acres (4.3 km2) regional park of the East Bay Regional Park District. It is located in Contra Costa County, in the East Bay region of northern California.

Castle Rock Regional Recreation Area is a 18,000 acres (73 km2) regional park of the East Bay Regional Park District. It is located in Contra Costa County, in the East Bay region of northern California.

The Old Borges Ranch is a 1,035 acres (419 ha) historic district in the Mt. Diablo foothills within the 2,600-acre (1,100 ha) Walnut Creek Open Space in Contra Costa County, California. A former cattle ranch, Old Borges Ranch includes multiple historic buildings, a ranger station, farm animals, and access to trails.

The Eugene O'Neill National Historic Site, located in Danville, California, preserves Tao House, the Monterey Colonial hillside home of America's only Nobel Prize-winning playwright, Eugene O'Neill.