This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

Prehistoric animals decorate this popular outdoor park.

This massive redwood tree has a hole in the base big enough to drive through.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

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

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

One of the most unusual geological features, recognizable from a dozen hit movies.

A Hawaiian stairway to heaven—that you can't climb.

This midcentury LA bar was the birthplace of tiki culture.

An underwater city for the dead.

A hip bar decorated with walls of golden skulls.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

This lab's maddening silence is good for business but bad for sanity.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

The Magical World of George Phar Legler.

Abandoned power station once home to a squatter community, now being developed into an arts center.

A lush green oasis in the middle of Chicago.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

A former utopian healing center created by a huckster and built by derelicts.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.