These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This semi-secret storybook hedge maze is also the oldest garden in the city.

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

Massive galleon from a box-office bomb docked in Genoa.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

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

Where Venice's gondolas go for a tune-up.

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

This community on a small Venetian island has taken to painting their houses in bright neon hues.

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

Pilgrimage site for star-crossed lovers.

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

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

A medieval wash house where people washed clothes in a river allegedly formed by the tears of a mourning nymph.

This amazingly preserved Doric temple was abandoned before it was ever completed.

An abandoned shopping gallery built during Fascist Italy tucked in the center of Palermo.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

Thousands of well-dressed mummies below a monastery.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.