Pull up and have a drink at a museum filled with hundreds of years' worth of shipwreck artifacts.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

The oldest skyscraper of Europe now stands dwarfed by the surrounding structures.

A memorial to the Netherlands' most famous privateer.

An icon of International Style architecture on the outskirts of Rotterdam.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

Malta’s largest cemetery is a Victorian-era architectural masterpiece.

The eyes and ears of this tower keep watch over Malta’s Grand Harbor.

So opulent and massive it was once dubbed a palace, this hotel's doors closed temporarily in 2007 and failed to reopen.

This mysterious, medieval cathedral remains unbuilt but fiercely protected.

Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.

One man's journey to return a stone to its point of origin after 200,000 years.

A striking memorial to the Jews of Leiden who were murdered during World War II is scattered throughout the city.

One of the Leiden's oldest pubs is also the birthplace of the Heineken star.

Only a few walls remain of the last church the Pilgrims used before they sailed to North America.

This early 19th-century graveyard is the final resting place of Vincent van Gogh's mother.

Once housed in the towers of this Gothic church, this 17th century clock still ticks today.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

Legend holds that St. Paul was flogged for preaching Christianity at this pillar.

This sea stack in Cyprus is traditionally seen as the birthplace of the goddess Aphrodite.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.