When you've got to go, you've got to go.

A tribute to a Ukrainian heroine who went undercover and killed several Nazi operatives.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

It houses the remains of a 17th-century version of the Titanic.

Khmer Rouge's high security prison.

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

The modern birthplace of Irish freedom.

Banksy gives themself artistic license with this piece of London street art.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

A naturally mummified 2,000-year-old man.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

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.

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

Week-long block party becomes a competition for the best decorated street.

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

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

A dazzling temple featuring a towering 12-meter golden Buddha.

A white Buddhist temple with a golden restroom.

A battle between nature and architecture in the Cambodian jungle.

340-foot statue built to honour the Heroes of the Soviet Union.