This tiny hotel perched atop a 50-foot tower really puts things into perspective.

Abandoned blockhouses from Nazi Germany's Atlantic Wall erode into the sea on a French beach.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

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

The world's oldest bookshop still in operation.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

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

Dead weights honor the dead of Portugal's fishing industry.

This small chapel is built of human bones and decorated with a golden skeleton.