A network of fortifications that never saw conflict.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

Explore the dark underground corridors of this graffiti-covered former military fortification.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

This museum gives tribute to the underappreciated "Down-South Submarine."

Dental instruments from the illustrious history of American dentistry.

This natural spring not only claims to heal the wounded but it has also been willed to God.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

A public urinal so pretty, it was declared a national monument.