This vast masterpiece of Moroccan architecture spreads across 20 acres.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

France's most famous cemetery, with some of its most curious tombs.

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

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

The Columbia Road Flower Market is now open every Sunday, rain or shine.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

Artists and musicians now rule over this former rail station.

A network of concealed passageways lies within a busy London Underground station.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

This hidden green space is the city's second largest conservatory.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

A little slice of Japan and its aesthetics in London's Holland Park.

This 1920s Dutch barge is now a floating bookstore.

The anatomical-pathological collection of a man who changed surgery.

Catacombs turned marketplace.

The curios of pharmacist and collector Henry Wellcome.

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

Eighty million natural history specimens call this gargantuan museum home.

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