The prototype for all Nazi concentration camps.

This massive subterranean fissure is known as the "underground Grand Canyon."

One of the largest caves in the world open to the public.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

During World War II, this rice mill became a Nazi concentration camp.

One of the tallest lighthouses in the world also serves as a monument to the fallen of World War I.

A macabre anatomy museum tucked within an old Italian hospital.

Get buzzed beholding one of the world's largest coffee-machine collections, then step into the café for a specially brewed cup.

A Milanese café entirely designed by the American director Wes Anderson.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.