Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

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

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

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

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

Since the 1960s, this small village has invited painters to decorate its walls.

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.

This uniquely designed bridge served as the city gate for Comacchio.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Where commuters walk through remnants of an ancient Greek necropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

Construction of Barcelona’s iconic (but controversial) church was finally 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.

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

Taking the subway here means doing so over a bridge located in the middle of an estuary.