An icon of the city, this chapel features an amazing dome ceiling and offers panoramic views.

This winding road through an Italian canyon may be the most scenic drive in the world.

Pilgrimage site for star-crossed lovers.

These elaborate gothic monuments honor Verona's medieval lords.

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.

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

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

Elaborate tile work in this railway station tells the story of Portugal.

This historic streetcar system has been running since the 19th-century.

A small but charming botanical garden that contains many exotic plant species.

This historical manor is complete with a magnificent garden.

The largest cave on the island of Menorca was likely the site of Iron Age rites and rituals.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

An eerie collection of the surviving structures from a past celebration of the future.

An ancient Egyptian temple in the middle of Madrid, Spain.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.