This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

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

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

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

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

Crushed coral and crystals give the sand its signature coloration.

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

Five candy-colored villages on the Italian Riviera.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

The oldest operating pharmacy in the world features 800-year-old recipes.

Geothermal waterfalls in Tuscany.

A submerged archeological park still holds the wonders of a Roman Sodom.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

Series of underground houses inhabited continuously for centuries.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Ghosts of France's colonial past.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.