Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

The largest permanent Monopoly board makes one of the longest games even bigger.

An inconspicuous footbridge beloved by San Diego locals.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

A 300-ship graveyard, with a few still visible at low tide.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

This massive redwood tree has a hole in the base big enough to drive through.

The largest drain hole in the world.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

One of the last free public hot springs is decorated with hippie art.

Home to the "Circus" trees created by Axel Erlandson.