The only monument to name all of the passengers and crew who died on the RMS Titanic.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

A plaque on the base of this statue holds a bewitching design.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The middle finger of modernity.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

The largest underground lake in Europe.

A pristine medieval church that was visited by Columbus before his travels to the Americas.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

One of the world's only places where tourists can make a trip in a submarine.

Einstein's old locker at ETH is now a tiny museum

It’s a painted window that looks completely real, hiding on a building in the market square.

The silly symbol for an underground protest group is now scattered around the city.

One of the few Tudor palaces in Germany, which hosted a historic WWII meeting.

Dining in this grain cellar feels like stepping onto a fantasy film set.

Caves famous for the dragon-slaying saint who lived there.

The famed crossbow of Switzerland's folk hero now adorns a restaurant wall

A 700-year-old drinking fountain turned charity for the less fortunate of Zurich.

This windmill has been grinding pigments for traditional paints for more than 200 years.