A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

On the cliffs of São Jorge in the Azores stand the remains of a lighthouse that was struck by a series of earthquakes.

This now abandoned restaurant provides some of the most amazing views of Lisboa.

This museum documents the ancient practice of salt production in Figueira da Foz.

Before this rocky hill was home to a chapel, it was used as a lookout by Romans and Moors.

A replica of the Roman emperor in glorious full color.

The ruins of a 16th-century bridge loom over Olivença's sovereignty.

Crafted from ocean litter, this sculpture highlights the ills of overconsumption.

On a trail in Portugal's Barão de São João National Forest, a pile of faces look up at hikers from the forest floor.

A small sanctuary carved into the mountainside near the tallest point in continental Portugal.

A museum dedicated to one of Portugal's most celebrated writers.

This ship offers visitors the chance to spend the night aboard a former floating hospital for fishermen.

A naturally occurring amphitheater carved by erosion into the mountainside.

An abandoned anti-smuggling station decays along the boundary between Portugal and Spain.

An abandoned mining complex in Serra do Gerês.

This abandoned fortress still stands guard over the Guadiana River despite a history of warfare.

This Gallo-Roman sanctuary is dedicated to Serápis, god of the underworld.

This enigmatic Roman tower lurks just outside Belmonte.

Bits of flat terrain surrounded by cliffs make one of the most beautiful landscapes in the Azores.

These rock drawings in the Côa Valley also create an ancient optical illusion.

In addition to showing films, this one-screen arthouse cinema from the late 1940s is a museum of old film equipment.

A glacial valley filled with silver beech trees in the mountains of Portugal.

An architectural gem nestled into a promontory overlooking a prehistoric landscape.