Mountain where Jesus was first tempted by the Devil.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

Secret refuge and museum of the Duke of Florence.

Bell tower juts out from a village buried under a lake.

Production site for handmade clay bricks.

Bohemian paradise covered in majestic forests.

One of Japan's most famous sights, the bridge was originally built in 1673.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Beautiful public park off the beaten path and away from tourists.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Gothic tower mentioned in Thomas Hardy poem "The Channel Firing."

Crumbling necropolis set high above Fez.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

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

Natural cathedral designed by Italian artist Giuliano Mauri.

Abandoned railway line circling the city of Paris.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Ruins of a German Castle on top of a towering stone pillar.

This East German military command bunker was ready for World War III.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.