This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A centuries-old bar once frequented by Picasso, Hemingway, and Dalí.

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

What appears to be an ancient Roman temple is actually a Catholic church.

Medieval streets buried beneath a papal fortress now form an underground city you can walk through.

Nobles would stage mock naval battles on this large lake at the Royal Palace of Caserta.

This medieval city gate is now a blend of the past and the modern world.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

These bronze horses on the gates of the Royal Palace of Naples were a gift from a Russian tsar.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

This 17th-century passageway is home to numerous bookshops, a witch legend, and the oldest pizzeria in the world.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

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

Locals pay their respects at a shrine to soccer player Diego Maradona—which claims to contain a real lock of his hair.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

Two stone columns flank the grand Venice square, but there were supposed to be three.

An artificial lake that opened in 1930 as a seaplane airport, now a park for aquatic activities.

Featuring one of the oldest collections of historic musical literature in the world.

Built as a defensive structure, this medieval walkway road offers a unique view of the village of Brisighella.

This Renaissance square was at the center of Leonardo da Vinci's map, the first ichnographic ever.

Historic harpsichords, clavichords, organs, pianos, and more inside a deconsecrated church.

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

On the shores of Lake Garda, the ruins of a Roman villa that allegedly belonged to the poet Catullus.