A Nazi concentration camp and Anne Frank's place of death.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

The best-preserved ancient theater in the world.

A stunning architectural yet functional feat, towering over Oslo.

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

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

An abstract monument to a symphonic composer.

A subterranean house of worship carved right out of the bedrock.

The oldest continuously operating pharmacy in Europe.

A black cat protests the City Guild in Riga's Old Town.

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

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

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

Special benches that play Chopin's music are scattered throughout his native city.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

King Ludwig I's collection of beautiful women.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Go surfing on this urban wave, "hacked" by local surfers.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The world's oldest rose is so tough it survived being bombed in World War II.