Markham Regional Arboretum

Cowell is a former unincorporated community now annexed to Concord in Contra Costa County, California. It lies at an elevation of 259 feet (79 m). Cowell was named for Joshua Cowell, local landowner. A post office operated at Cowell from 1922 to 1969. Cowell was a company town for Cowell Portland Cement. Other than a former firehouse, nothing remains of the former town, which was replaced by the Walnut Country subdivision, more commonly known as "The Crossings," during the 1970s. A looming, dormant 244-foot high smokestack remained as the most prominent reminder of Cowell until it was demolished in 2009.

Concord High School is a 9-12 public high school in Concord, California, United States,. It is one of the six high schools in the Mount Diablo Unified School District. Concord High School was constructed in 1966 and currently provides 144,373 square feet (13,412.7 m2) in permanent structure, including about 70 classrooms, a library, and other structures. As of 2023, the current principal is Julene MacKinnon.

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.

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.

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.

Ygnacio Valley High School (YVHS) is a public secondary school located in Concord, California, United States. It draws students from Concord as well as from the neighboring communities of Walnut Creek and Pleasant Hill. The school opened in 1962, and its first senior class graduated in 1964. Originally conceived as a temporary facility, the school currently carries an enrollment of over 1,500 total students for grades 9 through 12. When the nearby Northgate High School opened in 1974, YVHS lost approximately half its student body at the time. The school is part of the Mount Diablo Unified School District.

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.

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.

De La Salle High School is a private Roman Catholic school for boys run by the De La Salle Christian Brothers of the District of San Francisco in Concord, California, United States. It is located in the Roman Catholic Diocese of Oakland. The school was founded in 1965 by the De La Salle Brothers. De La Salle currently enrolls 1,039 students, and roughly 99% of each graduating class goes on to attend a university or college. It is home to the Spartans, the athletic varsity teams of the school and its school colors are green and silver. The school motto is "Les Hommes De Foi", French for "Men Of Faith", which is based on the order's Latin motto "Signum Fidei".

Shadelands Ranch was established by Hiram Penniman, an early American settler of California in 1856 as one of the first and largest farms in California's Ygnacio Valley.Penniman arrived in California in 1853 and three years later purchased 500 acres (2.0 km2) of land from Encarnación Pacheco, daughter of Juana Sanchez de Pacheco, then owner of Rancho Arroyo de Las Nueces y Bolbones from which the 500 acres (2.0 km2) were taken.Penniman planted a variety of fruit and nuts, including peaches, pears, apricots, grapes, almonds, and walnuts, as well as prunes, which served as Penniman's most important and most profitable crop. The original name of Penniman's ranch was "Shadelands Fruit Farm". Hiram Penniman fell ill in January 1897 and care and oversight of the ranch became largely the responsibility of Penniman's oldest daughter, Mary. The ranch fell on hard times with a drop in the price of crops and Mary had to depend on the charity of her sister Bessie's wealthy husband to take care of many of the ranch's financial concerns.When Hiram finally died, ownership of the ranch passed to Mary, then subsequently to Bessie after Mary's death in 1909. Bessie and her husband Albert Johnson mainly managed the ranch from afar, as Albert's business concerns lay mainly in distant Chicago. In 1921, Bessie hired Edmund Moyer to reside at the ranch with his family and supervise it. Bessie died in 1943 in a car accident, and not long after, Albert himself became severely ill. In 1947, with an eye to his own mortality, Albert Johnson formed the Gospel Foundation, an organization meant to oversee his extensive assets after his death. Johnson died in 1948 of cancer, and deeded all his property to the Gospel Foundation, including Shadelands.The Gospel Foundation continued to administer Shadelands until 1970, when they gave the remaining 1.5 acres (6,100 m2) of land and the ranch house to the city of Walnut Creek, California. Today it is managed by the Walnut Creek Historical Society, and has been open to the public since 1972 as a historical museum, the ranch house still furnished with much of the Pennimans' original furniture. The house was placed on the National Register of Historic Places in 1985.

Concord Naval Weapons Station was a military base established in 1942 north of the city of Concord, California at the shore of the Sacramento River where it widens into Suisun Bay. The station functioned as a World War II armament storage depot, supplying ships at Port Chicago. During World War II it also had a Naval Outlying Field at the southern edge of the base. It ceased being an operating airfield after World War II. During the Korean War, the Vietnam War and the Gulf War, Concord NWS processed and shipped thousands of tons of materiel out across the Pacific Ocean.The station consisted of two areas: the Inland Area (5,028 acres (2,035 ha)), which is within the Concord city limits, and the Tidal Area (7,630 acres (3,088 ha)). Because of changes in military operations, parts of the Inland Area began to be mothballed, and by 1999 the station had only a minimal contingent of military personnel and contained mainly empty ammunition storage bunkers, empty warehouses, and disused support structures. In 2007, the U.S. federal government announced that the Inland Area of the Naval station would be closed. The Tidal area of the base was not scheduled for closure and reorganized as Military Ocean Terminal Concord (MOTCO). The 834th Transportation Battalion is the port manager at MOTCO and operates the three piers and an Army-owned rail system that connects with major public railway lines.The 5-member City Council of Concord, sitting as the federally designated Local Reuse Authority, is in the process of formulating a Reuse Plan for the Inland Area that includes residential and commercial development while reserving approximately two-thirds for open-space and parks projects. City staff are assigned to manage this effort. The Reuse Plan is subject to approval by the Navy.The East Bay Regional Park District will be receiving 2,540 acres (1028 hectares) of the Inland Area that will be developed for public use as Concord Hills Regional Park. Formal conveyance of the property was expected in early 2016 whereupon the property will be prepared for public access and recreation. Since then 2,216 acres were transferred from Navy property to park. In addition "2,300 acres will be transferred to the city of Concord, whose Concord Community Reuse Project has been overseeing planning for housing, businesses, a college campus and other development.".

Clayton Valley Charter High School (CVCHS) is a comprehensive charter high school located in Concord, California, United States, just under two miles from Clayton. Most of the school's students live in Clayton and the nearby Concord neighborhoods. As a charter school, CVCHS has both a traditional principal as site leader and an executive director who heads the school district central office as superintendent. It also has a nine-member governing board.CVCHS houses ClaytonArts Academy. It is the location of the local radio station 90.5 "The Edge" KVHS, which broadcasts mostly hard rock and heavy metal music. Its newspaper is The Talon, which is part of the High School National Ad Network. The current executive director is Dave Fehte.