This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

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

An automaton perched above an classic clock and watch store

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

This embalmed man is one of the best preserved mummies from the Canary Islands.

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

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

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

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

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.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

The earliest known map to show America, discovered by accident at a Paris bookshop.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

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

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

A lush indoor jungle fills this bustling Madrid transportation hub.