The prototype for all Nazi concentration camps.

Four-story slides send people whizzing through the math department at this Munich university.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

A stairway to heaven, or to nowhere at all.

This massive statue is the personification of Bavaria and the first colossal statue of the modern period composed of bronze.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Numerous stone coffins from different centuries, lined up in a sixth century basilica.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

Famous landmarks and structures from across Italy fill this miniature park.

The only Shinto shrine in Europe that has been officially sanctioned by Japan.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

This uncanny fresco celebrating the "triumph of death" was split into four pieces to be moved to another museum.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

The world's most active stratovolcano is almost always erupting.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The footprint of a frustrated devil in Munich's Cathedral.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.