Handsomely crafted representations of our round planet.

The beautiful baroque library of the Hapsburg empire.

The final resting place for the remains of 143 Habsburg royalty.

An exquisite Baroque church in Vienna's old town.

Monument to a suicide protesting the Soviet invasion.

The hidden lair of an alchemist rediscovered in a 2002 flood.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

An existential riddle in the world's largest ancient castle.

A crucified and bearded female saint.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A Jenga-style cylindrical tower of books that appears to go on forever.

Goethe's "Faust" was inspired by these rock formations known as the "Devil's Pulpit" and "Witches' Altar."

A strange rock formation with numerous legends trying to explain it.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

Constantly maintained, this organ is playing a six-century long composition by John Cage.

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

An elevator into the Baltic Sea.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

The oldest trees in Northern Germany.

A quaint Russian village in the middle of a German metropolis.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

When the rain falls, this drain system turns into a musical instrument.