Outsider art or homage to aliens?

The rusting remains of the largest assembled WWII fleet on the West Coast.

A man-made island in scenic San Francisco Bay.

After serving in World War II and picking up Apollo astronauts, this aircraft carrier has been turned into a museum overlooking the San Francisco Bay.

More than 700 species live within this murky marvel of a swamp on California's coast.

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

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

Tragic reminders of the 1945 firebombing campaign over Tokyo still haunt this bridge.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

A restaurant and lodge in northern Wisconsin which served as a clandestine hideout for John Dillinger and featured one of the most famous botched FBI raids in history.

A larger-than-life version of the hat beloved by hunters, outdoorsmen, and Holden Caulfield.

The watery grave of an impractical idea.

Browse an impressive collection of passenger and military aircraft dating back to World War II.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

From the Difference Engine to the Cray-1, all under one roof.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

Rising out of miles of farmland, these buttes are sometimes called the world's smallest mountain range.

The arch that celebrated the completion of the Lincoln and Victory highways.

An iconic 1960s theater with a Buckminster Fuller-style geodesic dome.

What began as a prominent Burning Man art piece is now an iconic symbol of downtown Reno.

This Alamo Square mansion is rumored to have hosted satanic rituals and other occult practices.

Gold Rush-era tombstones line the park's paths.