This historic hotel invented the chocolate brownie.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

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

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

The site of Austria's biggest concentration camp now honors its victims.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The world’s oldest military museum has remained largely unchanged since the last days of the Austro-Hungarian Empire.

The world's oldest known salt mine.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

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.

A unique bridge with an equally unique view.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

A museum dedicated Germany's favorite drink and most well-known festival.

The telescope that discovered Neptune.

Daily jousts and dancing barrel makers in Munich's mechanical clock.