The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

An eerie, derelict amusement park in Berlin.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

This sublime architectural marvel is a rare example of an expressionist church.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A garden in Lisbon filled with giant porcelain creatures.

An exquisite grouping of structures made from 10 tons of invasive saplings.

This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.

A former electrical substation is now home to an eccentric junk art masterpiece.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

One of the world's longest murals depicts the history of diversity in Los Angeles.

The hotel room where Janis Joplin tragically died has now become a makeshift shrine to the singer.