A two thousand year old brothel uncovered in Northern Greece.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

See how paper is made the old-fashioned way.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

A 11-foot former president stands on a Kosovo street that also bears his name.

A futuristic, brutalist masterpiece that is also strangely prison-like.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

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.

This uncanny fresco celebrating the "triumph of death" was split into four pieces to be moved to another museum.

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

A study of Fascist era Art Deco design in Italy.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

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

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

Climb inside an iron crystal magnified 165 billion times its normal size.

"Holy Wisdom" overlooks the city that became its namesake.

Sofia's legislative center is continuously reinventing itself.

This building has two facades of clashing architectural designs.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

A striking symbol of the Bulgarian capital.