On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.

This statue of the "father of television" stands prominently in the United States Capitol.

The mall's looks were inspired by the cowboy extras who used to meet up—and cause real trouble—at this Hollywood hub.

Ancient ruins hidden underneath a modern luxury hotel.

An exercise in radical design and social living that became the epicenter of Soviet spy networks in London.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

This 1920s Dutch barge is now a floating bookstore.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

The site where hundreds of Greeks were tortured by the Nazi secret police is now a cosmetics store.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

This network of narrow, medieval passages has the most delightful name.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

Detailed miniature models of iconic landmarks in Mexico and around the world.

A prehistoric rock shelter that's literally in someone's backyard.

An eclectic collection of thousands of items owned by the sculptor Frederic Marès.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

This enormous World War II relic is one of the largest wooden structures in the world.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

This secluded walkway overlooks a magnificently wild London green space.

Pay your respects to departed pets, both celebrity and otherwise.