These docile dragons are ideal inhabitants for the conservatory greenhouses.

Three small rooms in the jungle house the most elaborate and intact murals of the Mayan world.

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

Many Hindus make the long pilgrimage to this holy city to have their remains burned on the banks of the Ganges River.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

One of Oxford's greatest treasures likely belonged to England's legendary King Alfred the Great.

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

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

In medieval times this small stone seat was used as a bizarre way to punish insolvent debtors.

A lush indoor jungle fills this bustling Madrid transportation hub.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

The walls and streets of the ancient city are peppered with penises.

The bones of two medieval royal lions were discovered at the historic fortress.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

Towering at a height of over 30 meters, this turn-of-the-18th-century landmark is the tallest temple in Nepal.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

A founding document of the European Union was written on an island where Roman emperors once banished women.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

The remains of 50,000 World War I soldiers rest under a towering arch overlooking the Alpine battlefields.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

Built to be the ideal penitentiary, this abandoned panopticon saw several revolts and even a prisoners' coup.