This enormous World War II relic is one of the largest wooden structures in the world.

This popular pilgrimage site offers a hole filled with holy healing dirt.

The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The ghostly remains of an accidental sea.

A world-class observatory in the California desert.

Along a California highway is a kind of Jurassic Park made of metal.

Oldest building in California still in use.

This beautiful ridge-top trail is dotted by tiny homes apparently built by a group of itinerant fairies.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

Megachurch turned Catholic church comprised of 10,000 glass panes.

A historic fort commemorating the United States' naval history.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Iconic Los Angeles residence famous for its 19 statues of Michelangelo's David.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

A multimedia experience that chronicles the atrocities of racism.

Come crisp December nights, this fairly plain neighborhood becomes a holiday dream world.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This grand mansion has starred in everything from Bones to Buffy.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

This glamorous old building is said to have inspired the Tower of Terror.