Brethren Christian Junior/Senior High School

Edison High School is a public high school located in Huntington Beach, California which first began operation in 1969. It is a part of the Huntington Beach Union High School District. Edison is a California Distinguished School. The graduation rate at Edison is 94%. Thirty-three percent of Edison graduates attend a four-year university and 61% attend community college or trade school. Twenty five total AP, Honors, and Accelerated level courses are offered at Edison. Edison is a largely sports-centered high school, with 30 CIF championships and 255 League championships.

The Huntington Beach Desalination Plant is a 50-million-US-gallon per day (190 Ml) facility proposed by Poseidon Resources Corporation in Huntington Beach, California. The desalination plant is scheduled to be operational by 2023 at a site adjacent to the AES Huntington Beach Power Station. The plant will provide additional water for Orange County and reduce the county’s reliance on imported supplies.

The Huntington Beach Energy Project (HBEP), formerly AES Huntington Beach, is a natural gas-fired power station located in Huntington Beach, California.

Huntington State Beach is a protected beach in Southern California, located in the City of Huntington Beach in Orange County. It extends 2 miles (3.2 km) from Newport Beach (Santa Ana River) north to Beach Boulevard, where the Huntington City Beach begins. The 121-acre (49 ha) park was established in 1942.This beach is a popular destination for many beach enthusiasts. This beach has moderate to good surf, fishing, volleyball courts, basketball courts, bathrooms, and fire-rings for bonfires. Lifeguard Services at Huntington State Beach are provided by the California State Parks Lifeguard Service. Lifeguards patrol the beach year-round while lifeguard towers are staffed roughly Memorial Day weekend through Labor Day weekend. The beach also provides a nesting sanctuary for California least terns, an endangered subspecies, and snowy plovers, a threatened species on the West Coast.

Estancia High School is located in Costa Mesa, California and is part of the Newport-Mesa Unified School District which serves approximately 21,000 students who reside in the cities of Newport Beach and Costa Mesa. Estancia High School is a comprehensive high school which serves the needs of approximately 1,200 students in Grades 9-12.

The Pegasus School is a co-ed, non-profit, non-sectarian, private day school on a 14-acre (5.7 ha) campus in Huntington Beach, California.

Genga, alternative spelling Gengaa and Kengaa, was a Tongva and Acjachemen village located on Newport Mesa overlooking the Santa Ana River in the Newport Beach and Costa Mesa, California area which included an open site now referred to as Banning Ranch. Archaeological evidence dates the village at over 9,000 years old. Villagers were recorded as Gebit in Spanish Mission records. The village may have been occupied as late as 1829 or 1830. An attempt in 2001 to preserve a nearby 9,000 year old village site from commercial development failed. A similar attempt to save a burial site of Genga in the 2010s also failed. This has initiated concerns over preservation in the area. A large part of the contemporary site of Genga situated in Banning Ranch may be transformed into a public open space as of 2022. The Tongva and Acjachemen support having a voice in the process.

The Santa Ana River is the largest river entirely within Southern California in the United States. It rises in the San Bernardino Mountains and flows for most of its length through San Bernardino and Riverside Counties, before cutting through the northern Santa Ana Mountains via Santa Ana Canyon and flowing southwest through urban Orange County to drain into the Pacific Ocean. The Santa Ana River is 96 miles (154 km) long, and its drainage basin is 2,650 square miles (6,900 km2) in size. The Santa Ana drainage basin has a diversity of terrain, ranging from high peaks of inland mountains in the north and east, to the hot, dry interior and semi-desert basins of the Inland Empire, to the flat coastal plain of Orange County. Although it includes areas of alpine and highland forest, the majority of the watershed consists of arid desert and chaparral environments. Due to low regional rainfall, the river carries only a small flow except during the brief winter season, when it is prone to massive flash floods. The San Jacinto River, which drains the southern half of the watershed, rarely reaches the Santa Ana except in extremely wet years. A wide variety of animal and plant communities depend on the riparian zones and remnant wetlands along the Santa Ana River. Humans have lived on the Santa Ana River for at least 9,000 years. In the period immediately before and during European colonization, there were four distinct indigenous groups in the area. The river was first seen by Europeans in 1769, when it received its name from members of the Spanish Portola expedition. Because it was one of the only reliable sources of water in a wide region, many large ranchos developed along the river and one of its major tributaries, Santiago Creek. After the area became part of the United States, the economy transitioned to agriculture, before urbanizing in the 20th century. Many cities established during this time including Santa Ana, Riverside and Anaheim derived their names from the river. In order to protect urban areas from the river's flood threat, major channelization and damming projects were undertaken in the 20th century, resulting in the loss of much of the natural river channel.

Pacific Beach Club was a planned resort in Orange County, California for African Americans. The beachfront clubhouse, bathhouse, and pavilion were planned in 1925 and construction nearing completion the next year when the property burned down under mysterious circumstances. The resort was located outside Huntington Beach.

The Diego Sepúlveda Adobe (sometimes known as the Costa Mesa Estancia or the Santa Ana Estancia) is an adobe structure in Costa Mesa, Orange County, California.

Mesa Verde is a neighborhood in Costa Mesa, California. It is bounded by the Interstate 405 freeway to the north, Harbor Boulevard to the east, Victoria Street to the south, and the Santa Ana River to the west. The community is bisected by Adams Avenue and contains the Fairview Channel, a Santa Ana River tributary that connects to Fairview Park, a wetland and riparian natural area. The neighborhood is home to two golf course complexes–the Costa Mesa Golf Course and the Mesa Verde Country Club. In 2018, the median household income in Mesa Verde was US$84,968.

Cuckoo's Nest (1976–1981) was a nightclub that was located at 1714 Placentia Avenue in Costa Mesa, California. The club was founded in 1976 by Jerry Roach, a former bar owner who had turned to selling real estate, after receiving the property from a client as a commission payment. A local Costa Mesa bar that was already in operation was named Jaws, after the film, and Roach took inspiration from this and named his new venture after One Flew Over the Cuckoo's Nest, the big box-office draw of that year, to make the club's name easily memorable. The club became known for punk rock.