This 18th-century sundial was designed to calculate the date of Easter each year.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

Despite the name, this ancient piece of crystal may not have been a lens at all.

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

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

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Hear the quietest sound from across the dome.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Eighty million natural history specimens call this gargantuan museum home.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The curios of pharmacist and collector Henry Wellcome.

This tiny garden was built specifically to provide a place of peace and serenity away from the busy city streets.

Some charming, but sadly, unloved animal statues call this park home.

This hotel is an amazing example of the Escuela Tapatía de Arquitectura movement.

This stunning and ethereal mural symbolizes the beauty, unity, and diversity of humankind.

It's believed this golden brick is part of the legendary lost Aztec treasure.

The now-public home of a renowned art collector is full of unique pieces from viceregal and 19th-century Mexico.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.