Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

An architectural oddity hides in plain sight on this iconic London bridge.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

The blinking light atop the iconic landmark has been sending secret messages for decades.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

World-famous, Pink's still manages to keep its prized cult fetish status.

Monastery complex at the location where bodies of the executed Romanov royal family were discovered.

Church built on the site where the last tsar of Russia and his family were killed.

A contemporary art installation housed within a Gothic cathedral.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Historic medieval fortified city in southwest France.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

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

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

Joe Cocker's 1988 concert at this site in East Germany marked a changing sea tide that would eventually lead to reunification.

This stone amphitheater was once part of Nazi Germany's plan to promote propaganda.

It has an American Dream Car exhibit, Europe's largest Formula One collection, and many, many mannequins.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.