The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

A barbarous band of serpents guard the bases of these Aztec temples.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

The soaring gondola lines form the longest aerial cable car system in the world.

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

This no man's land slicing through the island is strewn with abandoned relics of another time.

An amalgam of precariously balanced boulders, ancient petroglyphs, and Buddhist shrines.

This Khmer-era temple includes a lintel that was stolen and displayed at the Art Institute of Chicago for years before returning to Thailand.

An enormous Buddha peers through a gap in its ruined chamber.

A phallic shrine to a princess goddess in Krabi, Thailand.

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

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

Public water fountains built during the Ottoman Era still stand throughout this seaside town.

These caves secretly held national treasures during World War II.

The Greek War of Independence was declared at this medieval Byzantine sanctuary.

Built by the Ancient Greeks, this chariot bridge is still in use today.

A Byzantine-era church hidden in a wooded area below the Acropolis.

Step inside an ancient beehive tomb built for a mysterious cult hero.

Legend says this sacred tree was a gift from goddess Athena.

An ancient octagonal weather station named for the eight Greek gods of wind.