An artificial date palm stands as a memorial to Warsaw's Jewish community.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A 20th-century picture show in 3-D.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Launch site for nuclear war against Western Europe.

What almost started out as a spite house became an eccentric's found object masterpiece.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Explore the quarry where the marble was sourced for Michaelangelo's David.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

Ever-growing collection of devils in art.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

Sculpture garden of religious statues made it through Soviet rule.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

This striking structure is the Socialist-modernist centerpiece of a former Soviet spa resort.

An underground city of salt.