The beautiful 1920 Pantages Theatre remains hidden just underneath the LA Downtown Jewelry Exchange.

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

The final resting place of a space program monolith.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

World-famous, Pink's still manages to keep its prized cult fetish status.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The Great Fire of London and the regulation of one-way streets both started in this alley.

A mysterious shape catches the eye in this 16th-century painting.

The bronze uniforms commemorate the vital role of women during World War II.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

This ancient Egyptian obelisk still bears the wounds of World War I.

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

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

An architectural oddity hides in plain sight on this iconic London bridge.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

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

This luxury shopping lane has been protected by its own tiny police force for over a century.

The television series' iconic giant foot was borrowed from this classical painting.

The largest of London's subterranean rivers and once a mad, bad center of London life.

A cluttered and astounding collection of antiquities and curiosities.

London's smallest police station is barely the size of a phone booth.