A rare example of an octagonal Catholic church.

All that is left of this medieval castle is two towers, both of which now display a visible tilt.

Inside this medieval defense tower stands a modern residential building.

This Renaissance palace features a unique architectural design and is now home to the Ferrara National Art Gallery.

In this nearly 1,000-year-old monastery, monks painstakingly restore old books.

A sudden, striking cluster of hills south of Padua has been attracting visitors for centuries.

The origins of a large, medieval castle are shrouded in mystery, but now it's a delightful garden.

A modest museum in the final home of Italian poet and father of modern Italian, Francesco Petrarca.

Known as the Royal Palace of the Euganean Hills, this often overlooked castle has been home for multiple noble families over the centuries.

This Italian church is as beautiful as it is common, except for the real skulls decorating the many mannequins inside.

Hamburgers are intensely proud of their tunnel beneath the river.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Model Trains and Much More in Hamburg.

A fake town founded by Western movie stars is now becoming a hip desert community.

A music-filled, booze-soaked oasis in the desert.

Twelve sweet, nutty, life-sized statues are housed in this second-story shrine to almond paste.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

Dancing skeletal figures pay homage to a medieval mural destroyed during World War II.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

The world's first and only three-segment bascule bridge folds up into the shape of a capital "N" to let boat traffic through.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.