An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

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

When this former hospital pharmacy closed in 2013 it already looked like a museum, so they turned it into one.

The ancient sauropod tracks found in this former quarry are some of the largest in the world.

One of the world’s longest pedestrian suspension bridges.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

An abandoned swimming pool decays on the outskirts of Berlin.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

An ancient tomb that still stands in Portugal.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

This conical hill was built as a testing ground for an engineer known as the Glider King.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A slice of central Asia in the middle of Berlin.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

One of the few places in Portugal where the Celtic ritual of wearing large wooden masks is still practiced.

A Parisian boutique devoted to la Sape, the elegant Congolese fashion subculture rooted in European colonization.

This museum houses an imposing skeleton army comprised of creatures great and small.

Egyptian Revival movie palace abandoned for decades and restored in 2013.