One of the oldest cemeteries in Germany was originally used for victims of a cholera epidemic.

This tiny watering hole claims to have the smallest bar counter in Europe.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

At this small museum, visitors can view artifacts from the only battlefield in London during the War of the Roses.

Tucked inside a South Bank bar is an epic expressionist chronicle of the 20th century.

A tribute to all the green-thumbed workers who tend London’s public parks and gardens.

On the eve of a condemned prisoner's death, this bell rang 12 times outside their cell.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

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

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

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Become a prohibition rebel.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

The "Seinfeld" diner.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Ride the subways of yesteryear.

Elevated freight railway turned wildly successful urban park.

The corporeal remains of Napoleon III's dentist rest under this 15-story obelisk.

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.

The oldest surviving presidential residence in the United States.

A curious building honoring past and current members of a historic musical comedy troupe.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

World's first "penitentiary," meant to be humane, drove men insane.