This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

A German apartment building hosting as many trees as human occupants.

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

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

These 18th century gardens tell a rocky story of the son of Odysseus.

A small but immensely extravagant palace built by the "Night King."

This historic stone bridge has an entire neighborhood clinging to its sides.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

"The most colorful grottoes of the world.

A striking 12th-century-style castle built on the edge of a cliff.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

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

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

On the shores of Lake Garda, the ruins of a Roman villa that allegedly belonged to the poet Catullus.

The pristine waters crossing this forest form a hidden waterfall among the dense vegetation.

This cliff-face port is considered a masterpiece of mining engineering.

This amazingly preserved Doric temple was abandoned before it was ever completed.

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

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

Amalfi's pre-industrial history is slowly being engulfed by the lush vegetation of the Ferriere Valley.