A modest bronze plaque at the corner of West Huntington Drive and Colorado Place marks the site of the Santa Anita Assembly Center, the largest of fifteen temporary detention sites used during the wartime forced removal of Japanese-Americans. The racetrack barns served as makeshift housing while the longer-term incarceration camps were built; for many internees their first months of confinement were spent in horse stalls.
Most visitors to Santa Anita Park are unaware of this history. The plaque is small and easily missed, but worth a few minutes of attention if you are at the track. Several books and documentaries cover the period; the National Park Service site for the Manzanar War Relocation Center, four hours' drive north, fills out the broader story.