This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

A miraculous three-handed portrait of a saint can be found inside this church.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

A 15-foot-tall statue of the head of the Sopranos family greets passengers at a train station in southeastern Lithuania.

This former KGB building is now a museum memorializing the people who suffered during the Soviet regime.

Open-air museum with a large collection of Soviet-era statues.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

A statue built to honor the elite soldiers who fought for Latvia during World War I.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

The reconstruction of this prominent building fulfilled a long-written command.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

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

This lonely minaret with an unusual decorative symbol is all that remains of a historic Ottoman mosque.

A 14th-century Serbian Orthodox church that was once converted into a mosque under the much-disfavored Ottoman Empire.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

Italian cave with exceptional acoustics and an unsavory history.

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

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

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

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

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