An island on the Venetian Lagoon hosts this stone chair that has nothing to do with the King of the Huns.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

This 135-year-old weather station studied the effects of the climate on human health.

Where the lovelorn find a home for their sentimental keepsakes.

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

This poignant art installation raises awareness of violence against women.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

At this 16th-century monastery in rural Bulgaria, visitors can also spend the night.

A massive cave once a secret military base is now home to thousands of bats.

This building has two facades of clashing architectural designs.

Founded in the 4th-century, the town of Pernik plays host to the Surva Carnival⁠—a magnificent display of masked Kukeri dancers.

These cascading falls resonate throughout the Bulgarian forest.

One of the largest mines in Bulgaria is now home to a vast museum more than 100 feet underground.