Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

A giant snail sculpture looking longingly at the German traffic museum.

Fantastic views and thousands of love locks.

A rare chance to ride one of the few continuous elevators still in operation.

The Habsburgs' royal collections of art and wonders.

Museum devoted to the artificial language of Esperanto.

Op-art architecture designed for happiness.

Apartment complexes built into huge repurposed natural gas tanks.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

The personal charnel house of Anton Bruckner.

A subterranean display of public art and architecture.

A monument to the man who almost killed Hitler.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

This tribute to the 16th-century composer is now an unusual shrine to Michael Jackson.

A serious museum dedicated to two German comedians.

King Ludwig I's collection of beautiful women.

This riverside restaurant has been serving customers since 1146.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

Handsomely crafted representations of our round planet.

One of the best collections of wax anatomical models in the world.

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

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