This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

The plague quarantine island home to the alleged "Vampire of Venice."

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This Croatian computer club features such gaming relics as the infamous Virtual Boy and an 8-bit Pacman machine.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This former estate of a fascist leader is now a burnt out ruin leading to a system of secret tunnels.

The topiary maze at the Habsburg hunting lodge.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The Habsburgs' royal collections of art and wonders.

Baroque celebration of the end of the Great Plague of Vienna.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

A silly medieval mural preserved on the side of a Viennese house.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

Op-art architecture designed for happiness.

Apartment complexes built into huge repurposed natural gas tanks.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

The eerie burnt-out remains of a prominent building where 30 protestors lost their lives.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.