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

An underground city of salt.

This small exhibition displays equipment and artifacts once belonging to the feared Stasi secret police.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

The metal leaves on this tree are engraved with the names of Holocaust victims.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

The former home of Norway's greatest romantic composer.

This handsomely carved wooden church is more than 800 years old.

In downtown Oslo, a menacing and terrifying relief clings to a church wall.

This floating sculpture of ice is a poignant reminder of nature's power.

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

A favorite with sightseers and locals alike, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.