The world's largest reflecting pool is just two centimeters deep.

An icy lake tucked among jaw-dropping alpine panoramas.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The many—66 to be exact—faces of the German forest.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

A tiny island is connected to the mainland by a private railway that residents travel in their own personal wagons.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

An elevator into the Baltic Sea.

"The most colorful grottoes of the world.

Living trees form the structure of an open-air palace.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

Southern Italy's spinning top village.

A lover's walk between hilltop towns, decorated with graffiti love notes.

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

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

The glowing blue Nymphaeum of Emperor Tiberius.

Monasteries on rock pillars, once accessible only by frayed ropes.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A spectacular cave and a beguiling lake.

This tunnel entrance is built to resemble a grand castle but no one is quite sure why.

65 million-year-old chalk outcroppings mark the end of the Jurassic Coast.