A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

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

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The curios of pharmacist and collector Henry Wellcome.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A kaleidoscopic warehouse-maze of handmade neon signs.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

South Korea's only sex-themed park.

A traditional village rooted in the Joseon Dynasty.

This human-made pond is part of a Korean palace complex first built in the 7th century.

An early Korean refrigerator.

Numerical symbolism abound at East Asia's oldest observatory.

All that remains of an ancient royal palace is a water channel that was used for drinking games.

This tomb's name derives from a famous painting of a white horse found inside.

A remnant of Korea's colonial past lies forgotten in a hip neighborhood in Seoul.

Home to more than 13,000 pieces of war memorabilia and military equipment.

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

The burial ground of two kings and a queen is now a calm city park in the middle of bustling Seoul.

The toilet-shaped house of South Korea's sanitation pioneer is now a museum to the john.

The owner of one of the oldest homes in Amherst had a unique request before the home could be turned into a museum.

A single room pays homage to the prodigious achievements of the 30th President of the United States.

The monumental steeple on Amherst College's campus has no church attached to it.