Striking occult iconography on a medieval German church.

An extraordinary mechanical calculator designed by the mathematician and philosopher Gottfried Leibniz.

This proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.

Retirement home for giant obsolete machines.

An intricate and amazing house built by architect Karl Junker.

This East German military command bunker was ready for World War III.

Where the interconnection of German power grids should be.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

A spring-fed pool so deep it's used for scuba diving as well as swimming.

This huge industrial sculpture looks like a UFO and a factory had a baby.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

The cinder cone volcano with a less than complimentary name.

A bisected journey through evolution's history in the heart of Beijing.

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

A small man-controlled waterfall powers an Art Nouveau elevator and is accessed via narrow gauge, solar-powered tramway.

A miscalculation turns a very shallow freshwater lake into a very deep saltwater lake.

Remnants of a cone-shaped Nazi bomb shelter.