100 year tradition of fist fights, marked by marble footsteps.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

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.

A series of playful yellow penguins share a serious message about the environment.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

This strange statue depicts a young boy's body with an adult Mozart's head and a single wing.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Morocco's largest Jewish cemetery.

God's Saharan sandbox of wrath.

An underground city of salt.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

Brussels' favorite peeing boy has a sister.