It's the city that the ocean swallowed and people from all over the world come to get a glance.
No, it's not a metaphor. The Sunken City is exactly that — a city along the San Pedro cliffs that plummeted into the ocean after a massive landslide occurred in 1929. Back in the 1920s, a man named George Peck sought to make the area an exclusive residence for those wanting to live ocean side with sweeping views. Houses were constructed and people were residing in them until both a waterline and gas line broke at a nearby hotel due to a crack in the land. Residents were evacuated before the city was submerged.
The site looks almost post-apocalyptic. There are remnants of roads, streetcar tracks, house foundations, broken pipes and colorful graffiti art covering the area. Take note that although people do visit the site, the area is not technically open to the public and it's illegal to enter the grounds. If you're willing to climb over and under a couple of fences, then head on down!