A community of collapsing homes more than a mile out from the Florida coast.

An Ethiopian cloud forest protects some of the last wild arabica plants.

After visiting hours, this picturesque waterfall is essentially turned "off" to be used for hydroelectric power.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.

A geological oddity topped with a 2,000-year-old pagan temple.

A museum glorifying the life of Stalin, located in the city of his birth.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

A slice of central Asia in the middle of Berlin.

An eerie, derelict amusement park in Berlin.

This platform is now a memorial dedicated to those who were deported during the Holocaust.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

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

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Art and a pun, all in one.

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

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

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.