The best place in the world to buy tinned fish.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This ancient altar emerges from the thick forests to reveal the mysteries of Etruscan sacrificial rituals.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

This 16th-century monastery has been turned into a surrealist architecture compound.

Water and windows define this defensive Italian well.

This medieval mountain town is also known as the "Village of Streams."

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

A semi-abandoned village destroyed by U.S. bombings during World War II dominates the valley of Turano.

This ancient Roman bridge was a key feature of the ancient Via Salaria road.

The disputed geographic center, or "navel," of Italy.

When occupying Nazi troops detonated a mine below, medieval frescoes were revealed in this small cliff-side hermitage.

One of the four sanctuaries of Rieti's Holy Valley was the site of the first living nativity scene.

Naturally preserved bodies are eerily staged throughout the crypt in varying poses.

The ruins of this medieval castle overlook the lake of Piediluco in what was once a sacred forest.

Romans built the world's tallest artificial waterfall in 271 BC.