A glimpse into the festive and private lives of medieval Europe.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The world’s largest permanent desert lake is a UNESCO World Heritage Site.

A former reservoir that was only recently discovered after more than 60 years of disuse.

Local legend says the remains of Father Christmas lie within the medieval grounds.

The spot where Parvati convinced Shiva to marry her, has become a pilgrimage site for married and unmarried women.

What appears to be an ancient Roman temple is actually a Catholic church.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

This 6th-century church honors St. Tudno, the patron saint of Llandudno.

This medieval "painted village" is famous for its geometric facades.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

The oldest residential street in Europe also features an optical illusion.

The oldest surviving presidential residence in the United States.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

This ancient market is often referred to as the oldest shopping mall in the world.

The stunningly blue waters of these beautiful caves also have a violent past.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

The remains of Crystal Palace Great Exhibition of 1851.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.