The 16-foot sculpture of a hand looks out from his perch on top of an art gallery.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

This 600-year-old home seems to defy physics.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Housing a morgue, rare and confiscated weapons, and autopsy remains, the Vancouver police museum displays the dark side of Canada.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Australian Lake set aglow by Noctiluca Scintillans.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

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

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

The most visited, and possibly most controversial, museum in Germany.

Floating swimming pool within a moored vessel.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Started as a kitchen garden, now the second largest botanical garden in the world.

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

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

At this historic pub, you can sit back, sip, and watch a whole century go by.

An enormous, inside-out glass globe built in 1935.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

World's largest collection of serial killer artwork and other macabre exhibits.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.