Interactive modern and vintage submarine equipment, World War II relics, and submarine attire.

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

Tropical paradise strewn with hundreds of World War II wrecks.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Yugoslavia's biggest underground airport lies in ruins.

The remains of a sunken military ship wreck visible through clear water.

In the land of the Light Brigade stands a testament to the Cold War.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

The fairy tale castle of the "fairy-tale king."