It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

Climbing to the top of the cathedral's bell tower offers sweeping views of these medieval ruins.

Romania's triumphal arch looks out over Bucharest.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Something's watching you.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

No one knows who built this strange cave of worship or exactly why.

This once-derelict building is now one of the most beautiful bookstores in the world.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

Village of slate houses, built on a white marble outcrop.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

A cheeky architectural easter egg.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Copenhagen's celebrated theme park and gardens.

This medieval cathedral houses stained-glass windows featuring saints and pretzels.

Trek up this glacier before it disappears.

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.

The prototype for all Nazi concentration camps.

A hidden three-foot-wide house separates these two regal churches.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.