Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Ancient pueblos built into the base of a natural canyon wall.

A motel dedicated to Southwestern nostalgia.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

The Grand Canyon of Texas.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

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

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

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

This vast kitty-themed collection illustrates the history of human-cat interaction.

The remains of the iconic train crash from the movie 'The Fugitive' can still be found rusting along the Great Smoky Railroad.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

A diverse, expansive nature preserve in northeastern Kansas.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.