This fountain was designed to honor the man who helped bring water to Barcelona.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

This monumental fountain has moved around the city multiple times.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

Geothermal waterfalls in Tuscany.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

Water and windows define this defensive Italian well.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

Fortified medieval tower house with lovely roof garden.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Every inch of this chapel is covered in craftsmanship from across the world.

Thousands of well-dressed mummies below a monastery.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

In this town's main square resides a statue of none other than the 43rd President of the United States.