A three-shelf library serves as a memorial in the Jewish cemetery of Krems.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

"World machine" built by an untrained Austrian farmer.

The world's largest collection of intentionally useless inventions.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Ride a dragon train into a world of dwarves.

Double spiral staircases are not unheard of, but they are very rare.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Handsomely crafted representations of our round planet.

This former insane asylum now holds a pathological anatomy museum.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

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

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

Time stands still at this serene burial ground in the center of Budapest.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.