A snapshot of the city's fascinating voodoo culture.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

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

China's most famous acrobatics act.

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

Home to over 200,000 artifacts, this museum attempts to guide visitors through the ancient history of Beijing and Imperial China.

Hidden behind musical flora and forgotten for over a thousand years, this cave is now a neon dream.

Natural arch offers panoramic views of Yangshuo's karst hills.

The only castle in North America to ever house European sovereigns.

Frida Kahlo's childhood home, now a museum of her life and works.

Home to items never before seen by the public.

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

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

One of Europe's largest supercomputers is housed inside of a disused chapel.

Mountain where Jesus was first tempted by the Devil.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.