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

This futuristic German television spire is actually the world's largest digital clock.

Twisted buildings adorn the banks of the Rhine river.

An electrical pylon under whose legs a normal gauge train can run.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

Eighty million natural history specimens call this gargantuan museum home.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

The curios of pharmacist and collector Henry Wellcome.

Malaysia's floating mosque.

Self-mutilation in the name of beauty.

The largest tea plantation in Southeast Asia supplies gorgeous vistas alongside tea for the surrounding countries.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

The other side is actually green.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

God's Saharan sandbox of wrath.