Quite simply the largest tree in the world (by volume).

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.

Discover for yourself what Herb Caen referred to as "the best kept secret in the Bay Area."

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

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

The only theatre in the world constructed specifically for sound movement.

A hidden subterranean installation offers a view of the sky.

An overlooked and unassuming engineering marvel.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.