North Concord/Martinez station

Rancho Monte del Diablo (Devil's Mount Ranch in Spanish) was a 17,921-acre (72.52 km2) Mexican land grant in present-day Contra Costa County, California given in 1834 by Governor José Figueroa to Salvio Pacheco. The name "Monte del Diablo" means "thicket of the devil" in Spanish. The name was later incorrectly translated as Mount Diablo. The grant covered the area from the Walnut Creek channel east to the hills, and generally from the Mount Diablo foothills north along Lime Ridge to Avon on the Carquinez Strait of the Sacramento River, and included present day Concord and parts of Pleasant Hill. Pacheco and Clayton are outside of the Rancho Monte del Diablo grant.

The Don Fernando Pacheco Adobe is located at 3119 Grant Street in Concord, California.The Fernando Pacheco Adobe is the only Concord landmark listed in all three Historical Registries: entry on the National Register occurred on June 6, 1980; the California Registered landmark number is 455; and the Concord Historical Landmark designation is 1-26-26/5458. The Adobe was built by Don Fernando in the early 1850s as the base of operations for his growing ranch activities, and as his family's formal residence. Fernando was the oldest son of Don Salvio Pacheco. He was born on May 30, 1818, while his father was assigned to a Militia-Guard unit at the Pueblo of San Jose. At age 17, he was sent to take possession and mark the boundaries of his father's 17,921 acre land grant. Fernando was given 1,500 acres as initial share of the rancho. He subsequently married Pasquala (Figeroa) (Juarez) – a widow. Their six children: Pedro, Bonifacio, Cipriana, Maria Asuncion (who married Jose Julian Cantua), Librada and Bersabe were raised at the Adobe. Don Fernando's family enjoyed a reputation as gracious hosts. They were famous for their generosity and extensive fiestas on Adobe's then lush, well irrigated grounds. The Adobe's 32” thick walls were built of local adobe – mud. Ownership remained with Don Fernando's descendants until 1918. The land and adobe were then sold to the California Water Service Company ; it then was essentially abandoned. In 1940 title to 2 and 1/2 acres and the deteriorated adobe structure transferred to Contra Cost County, which leased it to the Horsemen's Association. The Horsemen undertook a major rehabilitation, and used the then remote facility and corral for their headquarters. In 1979, the country transferred the Adobe and its grounds to its current owner, the City of Concord. In the early 1980s the Horsemen, the city, and the Concord Historical Society completed another restoration effort to stabilize the landmark Adobe. The Horsemen's Association continues activities on site. The Fernando Pacheco Adobe is located at 3119 Grant Street, now well within the city limits. It is adjacent to Hillcrest Park and the De Anza Expedition Memorial marker.

GoMentum Station is a testing ground for connected and autonomous vehicles at the former Concord Naval Weapons Station (CNWS) in Concord, California, United States. The property was acquired and repurposed by the Contra Costa Transportation Authority, acquired in August 2018 by AAA Northern California, Nevada & Utah.In October 2014, the Contra Costa Transportation Authority announced that the GoMentum Station proving grounds would be used to test self-driving cars; according to them, "The public will not have access to the test site, and the self-driving cars will be restricted to the test bed site. With 2,100 acres (850 ha) of testing area and 19.6 miles (31.5 km) of paved roadway, the CNWS is currently the largest secure test bed site in the United States". Mercedes-Benz is reported to have licenses to test new driving technology, including smart infrastructure such as traffic signals that communicate with cars. Among the site's other notable features: "a 7-mile (11 km)-long roadway is great for testing high-speed driving, and a pair of 1,400-foot (430 m)-long tunnels" for sensor testing.Among the roughly 30 partners listed on the company's site are automakers Toyota and Honda, ridesharing companies Uber and Lyft and China-based autonomous driving company Baidu. In summer 2015, reports suggested the Apple electric car project was interested in using the site, as members of Apple's Special Project group were reported to have met GoMentum representatives but there were no subsequent reports of Apple personnel and vehicles actually using the site.In August 2019, GoMentum announced the October launch of its V2X (vehicles-to-everything) testing facility.

Matteo's Dream is an all-abilities playground in an urban park in Concord, California. It opened on May 16, 2007. Matteo Henderson was a boy with serious disabilities including blindness, cerebral palsy, and cognitive development. He used a wheelchair for transportation. The playground was built with US$770,000 of donated materials and with the labor of 1600 volunteers. Matteo, and many other children of all abilities have enjoyed the playground. Persons with disabilities are able to drive their wheelchairs directly onto the structure. Features of the playground are specially engineered to accommodate people with various disabilities. Matteo died on March 16, 2011, at the age of 11. In January 2014, a Matteo's Dream themed Rose Parade float was featured in the 125th Rose Parade in Pasadena, California.

Clyde is a census-designated place (CDP) in Contra Costa County, California, United States. The population was 678 at the 2010 census. It is located six miles (10 kilometres) east of Martinez.

Mount Diablo High School is a public high school located in Concord, California, United States. It is the oldest school in the Mount Diablo Unified School District, founded in April 1901. The school currently serves western Concord, the unincorporated communities of Bay Point and Clyde and a portion of Pittsburg.

Concord ( KON-kerd) is the most populous city in Contra Costa County, California, United States. According to an estimate completed by the United States Census Bureau, the city had a population of 129,295 in 2019, making it the eighth largest city in the San Francisco Bay Area. Founded in 1869 as Todos Santos by don Salvio Pacheco II, a noted Californio ranchero, the name was later changed to Concord. The city is a major regional suburban East Bay center within the San Francisco Bay Area, and is 29 miles (47 kilometers) east of San Francisco. The United States Census Bureau defines an urban area in the East Bay which is separated from the San Francisco–Oakland urban area and with Concord as the principal city: the Concord–Walnut Creek, CA urban area had a population of 538,583 as of the 2020 census, making it the 80th largest in the United States.

Concord station is a Bay Area Rapid Transit (BART) station in Concord, California. The station is located between the downtown business district to the west and residential neighborhoods to the east. Concord station has a single elevated island platform.

The Salvio Pacheco Adobe is a historic adobe house in Concord, California. It was built in 1835 by Salvio Pacheco, a Californio ranchero with vast lands in Contra Costa.

The Don Francisco Galindo House, known locally as the Galindo House and Gardens, is a 19th-century house in Concord, California built in 1856 by Francisco Galindo and his wife, Maria Dolores Manuela (Pacheco) Galindo, daughter of Salvio Pacheco who was the grantee of Rancho Monte del Diablo.The house is one of the few remaining Victorian ranch houses in Contra Costa County. In 1875 it underwent significant remodeling resulting in an enlarged basement, first floor and second floor. It was around this time that Francisco and Maria's oldest son, Juan "John" Galindo, and his bride, Marina "Sarah" (Amador) Galindo, moved into the house. After Juan and Marina's eldest child, Frederick, and Catherine (Hittman) Galindo were married in 1911, title was transferred to the next generation. Following Catherine Galindo's death in 1966, the house was maintained by her children Harold, Ruth, and Leonora. Ruth Galindo, the last direct descendant of the family, resided in the home until her death in December 1999. With distribution of Ruth Galindo's estate, the house and its surrounding property of approximately 1.5 acres (6,100 m2) were deeded to the City of Concord to be preserved for public use as a house museum and park.In October 2001, following a series of public workshops and meetings, the City of Concord adopted a Master Plan for the Galindo House, prepared by the historic preservation architectural firm Page & Turnbull of San Francisco, including a Museum Operating Plan. In September 2010, ownership of the Galindo House and property transferred from the City of Concord to the Concord Historical Society, which spent the next two years renovating the house and opened it to the public in 2012. In May 2013, the Society moved the city's Masonic Temple (which had been dedicated in October 1928) from its location at 1765 Galindo St. to the Galindo House property, facing Clayton Road, to become part of the Society's historical resource center and meeting facility.

KVHS (90.5 FM, "90.5 The Edge") is a non-profit high school radio station playing an active rock music format. It is licensed to the Mt. Diablo Unified School District and broadcasts from the campus of Clayton Valley Charter High School, Concord, California. The signal reaches the counties of Contra Costa, Solano, Napa, San Joaquin, West Sacramento and Yolo, and KVHS primarily serves the Diablo Valley area.

Buchanan Field Airport (IATA: CCR, ICAO: KCCR, FAA LID: CCR) is a medium-sized general and business public airport in Contra Costa County, California, United States, one mile west of the center of Concord and just east of Pacheco in the San Francisco Bay Area. The airport's street address is 550 Sally Ride Drive, Concord.The National Plan of Integrated Airport Systems for 2011–15 categorized it as a reliever airport, and it has an FAA certified airport traffic control tower.