The now-abandoned Fascist summer colony served a dark purpose during World War II.

A sunken idol welcomes parishioners to Davy Jones' Locker.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

German and American troops joined forces to defend this fortress during the strangest battle of World War II.

A crumbling bakery where forced laborers from the nearby concentration camp toiled to feed their fellow prisoners and Nazi soldiers.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

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

The only gulag ever to exist in socialist Yugoslavia.

Yugoslavia's biggest underground airport lies in ruins.

Now abandoned, the world's first torpedo factory is crumbling into the sea.