A scientific repository of goiters, boils and other ailments throughout Mexican history.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

The earliest known map to show America, discovered by accident at a Paris bookshop.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

Commonly acknowledged as the only public monument to the Devil himself.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

The ruins of Vancouver's abandoned heritage railway.

The oldest building in Vancouver's Chinatown is now home to one of Canada’s largest contemporary art collections.

A unique spiral staircase that doesn't quite make it up to the top floor.

This quirky piece of naval artillery has been deafening Canadians for over a century.

A retired subway car stands alone in a field in the middle of Queens.

The first museum in the United States dedicated entirely to posters.

This landmark cemetery in Boston was created more than 300 years ago.

An incredible collection of Mesoamerican art assembled by one of Mexico's great artists.

Housed inside a replica church, its collection honors the Black community displaced by the Halifax government.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

Crammed into several rooms of a Staten Island home, this museum is a vodka-soaked paean to the pleasures of drinking.

Wander among the abandoned ruins of this once-powerful medieval town.

Friendships have been forged over ham and eggs every Wednesday morning for nearly a century.

A library of rare occult books in Los Angeles.

Where the White Nile River dramatically cascades between Lake Kyoga and Lake Albert in Uganda.

Bioluminescence in the reefs of the Maldives causes the sea to glow like a starry night sky.