Blitzkrieg bop your way through Berlin's Ramones Museum.

Floating swimming pool within a moored vessel.

Antique frame collection with 2,400 frames.

An eerie, derelict amusement park in Berlin.

This TV tower once secretly housed a GDR intelligence team.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

Puppet theater and museum holding a collection of more than 300.

A sweet museum focused on beets.

An old department store turned Nazi prison turned artist commune.

Cold war icon and onetime "hole" in the iron curtain.

A slice of central Asia in the middle of Berlin.

Super-heavy Nazi architectural experiment.

Metro station with a claim to rock n' roll fame.

Berlin's old airport.

A restaurant and observation deck built in a unique broadcasting antenna.

A line of disused military bunkers built to defend against Nazi invasion lies hidden on the outskirts of the city.

The largest fountain in Bratislava.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

A unique hotel for the artistic soul.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

A cableway for car transport.

The unusual sculptures are believed to be powerful political symbols.