The Sunken City is the site of a natural landslide that occurred in the Point Fermin area of the San Pedro neighborhood of Los Angeles, beginning in 1929. A slump caused several beachside homes to slide into the ocean. The area was originally developed in the 1920s by George H. Peck, featuring homes with views of the Pacific Ocean. Experts investigating the landslide said that the ground was shifting at a rate of 11 inches (280 mm) per day. The landslide occurred at the southern tip of San Pedro, sending nearly 40,000 square feet (3,700 m2) into the Pacific Ocean. The area is still visited by sightseers.

San Pedro is a neighborhood located within the South Bay and Harbor region of the City of Los Angeles, California, United States. Formerly a separate city, it consolidated with Los Angeles in 1909. The Port of Los Angeles, a major international seaport, is partially located within San Pedro. The district has grown from being dominated by the fishing industry, to a working-class community within the city of Los Angeles, to an increasingly dense and diverse community.