Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

This red lake 4,000 meters above sea level is home to rare flamingos.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

Mountain of unimaginable riches that bankrolled the Spanish Empire, complete with its own underworld god.

A seemingly endless landscape of pure salt stretches far across Bolivia.

Mystic Incan rock piles three miles above sea level.

The Uros people live on floating reed islands in lake Titicaca.

Museum dedicated to the sacred leaf of the Andes.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Bible stories are brought to life with gloriously cartoonish kitsch in this South American theme park.

Designed by artist Pro Hart, built elsewhere in 1980.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

Christ's blood preserved in a Belgian town.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

The fairy tale castle of the "fairy-tale king."

The prototype for all Nazi concentration camps.

The footprint of a frustrated devil in Munich's Cathedral.

Go surfing on this urban wave, "hacked" by local surfers.

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