A man-made island in scenic San Francisco Bay.

This private residence was the template for one of the most beloved television homes of all time.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A psychedelic labyrinth on the San Francisco bay.

The site of murders and Satanic cult gatherings.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Few other hotels can rival the grandeur of the Castle in the Rockies.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

San Francisco's newly reopened hands-on science museum.

A winding path built in secret on the edge of the continent.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Hundreds of skulls and bones at the largest skeleton museum in the country.

A small, peaceful sculpture garden with a grim memorial to a disaster that took place a few blocks away.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

The California capital city once stood 10 feet lower than it does today.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

World-famous, Pink's still manages to keep its prized cult fetish status.

An exotic wildlife habitat right off The Strip.

I Street Bridge is the heaviest swinging center bridge in the United States.

30 years worth of pressed-tin, bakalite, and characters both loved and forgotten.

This $62 million dollar temple was erected to house one little dental fragment of religious history.