At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

This replica of the Greek structure is in the heart of Nashville.

This huge clock made of flowers and simple machinery was once used a political weapon.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

The world's longest known cave system.

Moonbows over Kentucky.

One of the few surviving "Wigwam"-themed motels.

An abandoned theme park with a strange and tumultuous past.

Crumbling Kennedys and a decaying Tecumseh are just some of the haunting remains of one man's cement art trail.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

A chapel on a volcanic core, marking the end of a successful journey.

Historic medieval fortified city in southwest France.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

Try not to get slimed in Tribeca.

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

See just what life was like in a 19th-century prospecting town.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

This historic train station has been converted to a locomotive themed hotel.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.