In 1929, a landslide in San Pedro, California, caused a neighborhood of exclusive homes to tumble into the ocean. At its peak, the land movement was measured at an astounding 11 inches a day. During the slide, part of the adjoining Point Fermin Park also fell into the ocean.
Today, the area is called "Sunken City" by locals, and consists of the broken foundations of houses, abandoned streetcar tracks, buckled sidewalks, and empty streets. The area is now a popular hiking spot.