Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

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.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

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

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

One of the oldest still-working clocks in the world sits on an ancient tower.

A musical instrument played by the sea.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

A gothic-styled structure that has been the location for several movies.

An ancient knight and a symbol of the city's freedom.