The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

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

Pilgrimage site for star-crossed lovers.

The Origin of On the Origin of Species.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

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

The world-record holder for the longest bridge stretching continuously over water.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

The only rotating bar in New Orleans has been slowly spinning since 1949.

The second oldest continuously operating bar in Louisiana.

The curiosities and wonders of pharmacy in a delightful historic building.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

It houses the remains of a 17th-century version of the Titanic.

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

A pocket of jungle amidst urban expansion in Panama.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

Sloth rehabilitation center in the jungle of Costa Rica.

You'll find the little birds tucked within the rocks of this Australian beach.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.

The only pollutant in the clear blue water is sunscreen.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.