The last bastion of Roman presence north of the Alps looms over a German town.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

2300-year-old Roman road connecting the empire.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

A permanent exhibition honors Queen, which recorded seven albums at the casino-based studio, including “Under Pressure” with David Bowie.

Constructed along the shores of Lake Zurich, this pavilion is a walk-through work of art.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

The university library shaped like a giant piece of Swiss cheese.

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

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

France's high-tech, future-themed amusement park.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.