An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

A pair of gigantic baby heads greet passengers at Atocha Station.

An automaton perched above an classic clock and watch store

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

This small museum tucked within a subway station holds pieces from Madrid's past.

This small and often-overlooked museum holds some of Spain's finest artistic treasures.

This lucky bronze frog was gifted to Madrid by a casino.

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

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

Bronze statue marks the spinach capital of the world.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Yup, that's where the name came from.

This Arkansas town is known for its gangster history, its healing waters, and now its brews.

The seventh largest spring in the world.

Ernest Hemingway wrote a good portion of "A Farewell to Arms" while living with the parents of his second wife, Pauline Pfeiffer.

These waterfalls can be twins or triplets, depending on how much it's rained recently.

People of the Plum Bayou culture built these enormous mounds over 1,000 years ago.

Where animatronic singing fish go to retire.

This psychedelic tourist trap is a leisurely descent into madness.