This 1960's Soviet submarine in Peenemünde Harbor claims to be the largest submarine museum in the world.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

This short white tower is all that's left of Scotland's first permanently manned lighthouse.

This tiny island is home to the world's largest colony of Northern gannets.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

At high tide this strange footbridge appears to have no purpose whatsoever.

This Scottish bay still reveals evidence of its days as a seaside swimming pool.

This 19th-century monument served an important purpose for fishermen thanks to its built-in barometer.