Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

A regular looking rock with an unbelievable history.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

The unbelievably opulent home built for an infamous newspaperman.

San Francisco Bay's ghost town.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

The private clubhouse for the members of the Academy of Magical Arts.

A hotel and restaurant serving as the mecca of kitsch.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

A one-of-a-kind collection of a unique medium.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

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

A huge musical instrument played by the ocean.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

Thanks to its curved shape, this incredibly durable dam "whispers" to visitors.

A roadside attraction fit for a giant.

The world’s oldest baseball field had to fight to earn its record.

The world's only bushplane museum captures the spirit of the early planes and pilots and their contributions to northern life in Canada.

This artful dam holds back a crater-made reservoir that can be seen from space.