This beloved ancient tree is the pride of this city center.

A replica of the ice houses that once formed the basis of a local ice cream industry sits proudly in the middle of traffic.

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

The odd cement nubs littering this Spanish square are actually the entrances to a series of buried silos.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

"Satisfying" is a good way to describe these beautifully aligned rows of Spanish mills.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Iron Age runes and ruins hide in plain sight along this Portuguese beach.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This star-shaped military outpost is now simply trying to protect itself from neglect.

A majestic hotel for dreamers rises from the center of a fairytale wood.

An abandoned tuberculosis hospital said to be haunted by the patients who died within its walls.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

The building hides in plain sight in Ribadavia's historic Jewish quarter.

A cluster of granite granaries perched on stilts.

One of Europe's largest groups of dolmens remains largely off the typical tourist track.

Nestled in the mountains of Portugal is a tiny village made almost entirely of schist.

A small Portuguese cottage formed between boulders in the countryside.

A Franco-era dam flooded (almost) everyone out of this centuries-old Aragonese town.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

This enchanting green space houses a labyrinth lined with toxic plants.

This century-old ruined temple was reborn as "The Church of Skate."