Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Windblown rock formations in an ancient Roman quarry.

This weird, elephant-shaped rock also hosts two ancient tombs.

Stalactites and stalagmites in a beautifully lit cave.

Five candy-colored villages on the Italian Riviera.

Massive galleon from a box-office bomb docked in Genoa.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This memorial to local World War II heroes is slowly being reclaimed by nature.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

This giant, 83-year-old ship elevator is an engineering feat to behold.

An abstract and eyecatching clock/fountain is the centerpiece of this little-known German city.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

It's always summer at the beach inside this former airship hangar.

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

Terrifying derelict military hospital once housed a recuperating Hitler.