Los Angeles County Arboretum and Botanic Garden

Baldwin Lake is a sag pond in the Los Angeles County Arboretum and Botanic Garden, which is in the San Gabriel Valley of Southern California, south of the San Gabriel Mountains. The pond, arboretum, and botanic garden are all within the city of Arcadia.The pond is fed by stormwater and natural springs; water flows out of the pond to the aquifer at Raymond Fault, and on to the Rio Hondo. Baldwin Lake is part of the Los Angeles River watershed. The area of the pond is about 4 acres (1.6 ha). Silt and pollutants embedded in the pond by surface runoff have reduced its depth from about 12 feet (3.7 m) to 30 inches (760 mm).

The Reid-Baldwin Adobe, formerly called the Hugo Reid Adobe, is an adobe house built in 1839. It is located at the Los Angeles County Arboretum and Botanic Garden in Arcadia, California. The Hugo Reid Adobe was designated a California Historic Landmark (No. 368) on April 3, 1940. The Reid Adobe was built by Scottish−Mexican Hugo Reid on the shore of what is now called Baldwin Lake, with the help of local natives. Reid received the full Mexican land grant for Rancho Santa Anita in 1845, which included 13,319 acres of land. Reid farmed some of the land and planted grape vines.Hugo Reid (1811–1852), born in Scotland, was an early resident of Los Angeles County who became a naturalized citizen of California (then a part of Mexico) in 1839. He married Barolomea, a respected Gabrieleño woman, who became known as Victoria Reid. Born at the village of Comicranga and taken to San Gabriel Mission at the age of six, Bartolomea was married at the age of 13 to an older indigenous man, as arranged by the Franciscan fathers. The couple later were given small plots of land for their work at the mission. When the mission was secularized, Bartolomea had been widowed and had remarried, to Hugo Reid. As he was not yet a naturalized citizen, she received a land grant in her name alone. Their marriage elevated Hugo's status, as she was a well-connected mission Indian.Elias Jackson “Lucky” Baldwin purchased Rancho Santa Anita in 1875. In 1879 Baldwin added a wooden wing to the old adobe home. Elias Jackson "Lucky" Baldwin (1828–1909) was a pioneer of California business, an investor, and real estate speculator during the second half of the 19th century. He earned the nickname "Lucky" Baldwin due to his extraordinary good fortune in a number of business deals. He built the luxury Baldwin Hotel and Theatre in San Francisco and bought vast tracts of land in Southern California, where a number of places and neighborhoods are named after him.In 1947 the state and county acquired the land to create an arboretum around the lake and historic Reid-Baldwin structures.

Queen Anne Cottage and Coach Barn is a Victorian style pair of buildings at Baldwin Lake, on the grounds of the Los Angeles County Arboretum and Botanic Garden, located in Arcadia and the San Gabriel Valley of southern California. Elias Jackson "Lucky" Baldwin built the elaborate Coach Barn near the pond in 1879, and 'Baldwin's Belvedere' or the Santa Anita Ranch Guest Cottage on a peninsula in the pond in 1885−1886. They are a California Historical Landmark, and were placed on the National Register of Historic Places for their significance as examples of Queen Anne Style architecture and for the associated, largely intact Victorian landscape design gardens.

Alyeupkigna (also, Aleupkigna and Almpquig-na) is a former Tongva-Gabrieleño Native American settlement in Los Angeles County, California.It was located at Santa Anita, in the San Gabriel Valley, at the base of Little Santa Anita Canyon.Alyeupkigna Rancheria was established in 1800 as an agricultural outpost of Mission San Gabriel Arcángel. Hugo Reid built an adobe residence beside spring fed Baldwin Lake on the site in 1839–40, and received the full Mexican land grant for Rancho Santa Anita in 1845.The site is within the present day Los Angeles County Arboretum and Botanic Garden and city of Arcadia.

The Shops at Santa Anita is a super-regional shopping mall located in Arcadia, California, adjacent to the Santa Anita Race Track, formerly known as Santa Anita Fashion Park and Westfield Santa Anita.

The Temporary Detention Camp for Japanese Americans / Santa Anita Assembly Center is one of the places Japanese Americans were held during World War II. The Santa Anita Assembly Center was designated a California Historic Landmark (No.934.07) on May 13, 1980. The Santa Anita Assembly Center is located in what is now the Santa Anita Racetrack in Arcadia, California in Los Angeles County. After the attack on Pearl Harbor on December 7, 1941, there was fear that some Japanese Americans may be loyal to the Empire of Japan and Emperor of Japan. President Franklin D. Roosevelt on February 19, 1942, signed Executive Order 9066. Executive Order 9066 authorized the secretary of war to prescribe certain areas as military zones, clearing the way for the incarceration of Japanese Americans, German Americans, and Italian Americans in U.S. concentration camps. The Santa Anita Racetrack was selected as one of the Southern California detention camps. The other Los Angeles County camp selected was the Pomona assembly center at the Los Angeles County Fairgrounds in Pomona, California. Pomona assembly center is also a California Historical Landmark (No.934.04). A California Historical Landmark Plaque for the Santa Anita Assembly Center is located Santa Anita Racetrack, 285 West Huntington Drive, Arcadia, CA 91007, in front of the Grandstand entrance.The Santa Anita Assembly Center opened on March 27, 1942. The center at its peak housed 18,719 Japanese Americans. The horse stable was covered to living areas, 500 new barracks were built in the parking lot and single males were housed in the existing grandstand building. Like the Burbank Airport, there was a camouflage net put over detention camp as the center operated under military contract. On August 4, 1942, a riot broke out at the Santa Anita Assembly Center. The camp closed on October 27, 1942. Once the permanent concentration camps were built most of the Santa Anita Assembly Center inmates transferred to Heart Mountain Relocation Center, Rohwer War Relocation Center, Granada War Relocation Center, and Jerome War Relocation Center. In California, thirteen temporary detention facilities were built. Large venues that could be sealed off were used such as fairgrounds, horse racing tracks and Works Progress Administration labor camps. These temporary detention facilities held Japanese Americans while permanent concentration camps were built-in more isolated areas. In California Camp Manzanar and Camp Tulelake were built. Executive Order 9066 took effect on March 30, 1942. The order had all native-born Americans and long-time legal residents of Japanese ancestry living in California to surrender themselves for detention. Japanese Americans were held to the end of the war in 1945. In total 97,785 Californians of Japanese ancestry were held during the war.

Santa Anita Park is a Thoroughbred racetrack in Arcadia, California, United States. It offers some of the prominent horse racing events in the United States during early fall, winter and in spring. The track is home to numerous prestigious races including both the Santa Anita Derby and the Santa Anita Handicap as well as hosting the Breeders' Cup in 1986, 1993, 2003, 2008, 2009, 2012, 2013, 2014, 2016, 2019, and 2023. In 1984, Santa Anita was the site of equestrian events at the 1984 Olympics. Since 2011, the Stronach Group are the current owners.

A Dawn In The West is the title of a 2013 bronze statue by Alfred Paredes of Elias J. “Lucky” Baldwin (1828–1909), pioneer California rancher, businessman founder and first mayor of Arcadia. Commissioned and donated to the City of Arcadia by Baldwin's great, great, great granddaughters, Margaux Gibson-Viera and Heather Gibson, both of California, the 9-foot bronze figure of Baldwin stands on a 4-foot concrete plinth in the center of the Monsignor Gerald M. O’Keefe Rose Garden, at the intersection of Huntington Drive and Holly Avenue, in Arcadia, California. It was dedicated on April 16, 2013.A Dawn In The West depicts Baldwin at about the age of 80 as he surveys the site of his home and ranch located nearby. The figure is positioned looking northwest toward the home that Baldwin occupied at the time, known as the Hugo Reid Adobe, which is now preserved at the Los Angeles County Arboretum and Botanic Garden.

El Rancho Santa Anita Shopping Center in Arcadia, California was one of the first planned shopping centers in suburban Los Angeles, opened in 1948-1950, and later anchored by a large May Company department store. The May Company building is now empty, but the center remains anchored by a supermarket.

Ross Field is a former World War I military airfield, located 0.8 miles (1.3 km) south-southwest of Arcadia, California. It was one of thirty-two Air Service, United States Army training camps established after the United States entry into World War I in April 1917. It operated as a training field between 1918 until 1919.

Arcadia is a city in Los Angeles County, California, United States, located about 13 miles (21 km) northeast of downtown Los Angeles in the San Gabriel Valley and at the base of the San Gabriel Mountains. It contains a series of adjacent parks consisting of the Santa Anita Park racetrack, the Los Angeles County Arboretum and Botanic Garden, and Arcadia County Park. The city had a population of 56,364 at the 2010 census, up from 53,248 at the 2000 census. The city is named after Arcadia, Greece.

Sierra Madre Wisteria or The Wistaria Vine is a flowering Wisteria vine shown at the annual Wistaria Festival in Sierra Madre, California. The Wistaria Vine in 1990 was declared by the Guinness Book of World Records to be the largest blossoming plant in the world. The Wistaria vine is named after physician Caspar Wistar (1761–1818) by botanist Thomas Nuttall (1786–1859). The general name for the plant is spelled Wisteria. This single wisteria vine covers over an acre. The Wistaria Vine has over 1.5 million blossoms and weighs over 250 tons. The plant is on private land and open to the public once a year during the Wistaria Festival.