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

Ruins of a German castle on top of a towering stone pillar.

An ornate century-old elevator still connects the two halves of Bad Schandau.

This bust remembers the haunting local legend of a murderous monk.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

Enormous sandstone towers loom within a Czech forest.

Two monstrous faces loom over a village in Czechia.

Two stunning 17th-century libraries and a cabinet of curiosities.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A church of bones, decorated with 40,000 human skeletons.