A striking public sculpture representing the period of martial law in Communist Poland.

A cluster of headless, armless sculptures looms within a popular Polish park.

A catapult rock from Gotland’s 13th-century civil war is still lodged in Scandinavia's best-preserved medieval city wall.

This fantastic cave remained unexplored until 1948 when three schoolboys discovered a hidden entrance.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

The Swedish flag over this small naval fort signals that the nation is at peace.

The oldest funicular in Lithuania has been climbing this steep hill since 1931.

The oldest housing complex in Riga is a mini timeline of architectural trends.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Norway's national monument to fallen seamen.

A statue honors the children who fought Nazis in Poland.

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

An impressive monument to Poland's independence.

Museum dedicated to "the man who moved the Earth."

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

Modern art commemorates one of the first military actions of World War II.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

Museum deep in the catacombs of St. Michael the Archangel Church is explored by touch, sound, and smell.

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

Historic slum of Tartu.

First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.