A small 12th-century temple surrounded by waters believed to have curative properties.

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

A battle between nature and architecture in the Cambodian jungle.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Baroque celebration of the end of the Great Plague of Vienna.

The former headquarters of history's oldest megacorporation.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

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

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This remarkable checkered church on a Corsican hilltop is fabled to have been built by angels.

This amazing medieval fortress stands atop a promontory along the famous Cinque Terre.

Five candy-colored villages on the Italian Riviera.

Every year, the town of Menton, France, turns lemons and oranges into giant sculptures depicting windmills, dragons, and more.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

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

A second generation sun-powered marvel lights up the night.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The ominously named cave is home to some remarkable ancient art.