A giant bronze monument to Kim Il-sung and Kim Jong-il is one of the most sacred sites in North Korea.

This abandoned-looking amusement park is frighteningly open for business.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

An institution dedicated to curiosity, logic, riddles, and Mongolia's long history of puzzles.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

The oldest inn in England served brew to the crusaders.

Moscow's imposing monument to the Space Age.

Museum celebrating the achievements of the Soviet space program.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

This hospital helped pave the way for treatment that drove down child-mortality rates in 19th and 20th centuries.

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

A sculpture of a famous ape who was once a beloved household name in London.

The medieval woodcut-style artwork chronicles life in medieval London.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

A network of bells in the pubs and restaurants around Westminster alerts politicians when it's time to cast their votes.

The pockmarks across the building's facade are remnants of the Blitz.

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

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

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

An unassuming London park is actually a pilgrimage site for modern clowns.

A 1950s beatnik coffee house, turned 60s counterculture hotspot, turned modern music venue.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.