The resting place of a Civil War celebrity's amputated limb.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Watch the ships come in on Michigan's 210 ft. high observation deck in Sault Ste. Marie.

Strange physical sensations and optical contradictions keep visitors coming back for more.

One of the largest crucifixes in the world stands 55 feet tall in a secluded, wooded area of northern Michigan.

This shallow cave got its name from copious amount of human bones found inside.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

A county library in rural Ohio houses one of the finest mineral collections in the world.

Former self-sufficient mental institution now a planned community.

Full-sized barn houses many restored instruments.

Part taxidermy workshop, part natural history museum this Michigan destination shows off its dead animals and helps you mount your own.

Paranormal activity on the great lakes.

With over 5,000 champions, the Hall of Fame continues to draw amateur eaters.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

This small road tunnel is the only place where you can cross beneath the Erie Canal.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

An old dining hall now serves up ghost stories for lusty locals.