A UFO-shaped event building originally intended to be a science museum showcasing the future.

The history of sea-faring refuse and disaster is on cramped display in this Netherlands folk museum.

This South London cemetery holds the remains of more than 15,000 people.

A hands-off space for graffiti artists to hone and display their skills.

This secret garden has bloomed into London's most unique hub of urban creativity.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A kaleidoscopic warehouse-maze of handmade neon signs.

A whimsical bridge adorned with decorative dragons.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The once highest point in China blends symbolic design with a kick of adrenaline.

Why walk on this historical site when you can zoom down instead?

The most famous location in China was home to whole dynasties worth of imperial rulers.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

The world's first museum dedicated to the work of game-changing naturalist Charles Darwin.

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

Immortal combat in a Moscow museum.