This peculiar lake of pitch is so thick and viscous that one can walk on its surface.

The crumbling remains of a once-grand building.

This group of small islands on Lake Nicaragua formed after an eruption of the Mombacho volcano.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

Mysterious Incan ruins on a tiny island in Lake Titicaca.

A seemingly endless landscape of pure salt stretches far across Bolivia.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Southern Italy's spinning top village.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

The highest point in Belgium is a staircase to nowhere.

This bike path was sunk below water level for maximum wonder.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A colossal statue with a controversial past, forgotten for more than 30 years.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.