Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

A museum dedicated exclusively to aircraft used in the military.

Cadillac where country's first big star was found dead.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

This fairytale-inspired cottage was created by a university literature professor.

A historic coal mine that doubles as a museum and tourist attraction.

Visit this playground of waterfalls, caves and sinkholes.

Gutted airplanes slowly decay in a Florida field.

A "hospital" where people went to be quarantined, die, and be buried in the yard.

Enormous lake at the bottom of a unique cave system.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

A stockpile of childhood lunch pails turned collectibles.

A mailbox that saved a nature reserve.

Dedicated to the history of the health sciences.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.