This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

Beautiful views and Roman-style statues on the Italian coast.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

An omelette made with over 1,000 eggs may have been prepared when Holy Roman Emperor Charles V visited this monastery.

The tallest statue in Italy is also one of the world's tallest statues of Jesus.

The abandoned ruins of a failed resort hide on this verdant, picture-perfect island.

An Italian hillside ghost town.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

Southern Italy's spinning top village.

The sunlight passing through the opening of this huge cave system creates a magical effect.

The steel cable lets adventurers zoom between two mountain towns at speeds of up to 75 miles per hour.

Geometry and mystery come together in an epic show of octagonal masonry.

An abandoned monastery sits on a far-off island in the Adriatic Sea.

A medieval Italian village is fighting depopulation with this vibrant annual street art festival.

This precariously perched fortress was once ruled by a crow-worshipping baron.

A holy stone inside this spectacular hermitage is said to have healing properties.

Host to the annual Festival of the Snakes.

The largest civilian satellite control center in the world is located in the middle of a drained lake.

This Roman underground canal was the longest tunnel ever built until the late 19th-century.

Ever loyal to Roma, the small village of Albe in the Abruzzo region carried on until an earthquake did it in.