In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

A surreal statue honoring Prague's favorite literary son.

Macabre astrological automaton clock dating to the late 1400s.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This Bangkok high-rise looks like a rudimentary LEGO elephant.

The final resting place for the remains of 143 Habsburg royalty.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Legends surround an ancient tree trunk riddled with nails for good luck.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The final resting place of the great navigator, or maybe his brother.

The world's largest wooden structure.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

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

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

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

Only hotel where you can legally launder money.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.