Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

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

The only castle in North America to ever house European sovereigns.

Home to more than 13,000 pieces of war memorabilia and military equipment.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

The second oldest continuously operating bar in Louisiana.

The final resting place of New Orleans' most famous voodoo priestess.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Turning night into day in Victorian-era Austin to thwart a serial killer.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

Remembering the Alamo with a full-scale replica of the 1836 city.

It's not your typical library, memorial, or book store.

Odd outsider art installations surround a Gold Rush-era ghost town.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.