Ornate limestone building now filled with geologic specimens, and more.

A medical facility that has been kept frozen in time.

Penn State's giant bug collection.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

Take a drunken tour inside the world's largest known geode.

A real flying saucer, contracted by the U.S. Air Force.

Unique collection containing a wide and curious range of contraceptive items.

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

"You can only scalp a customer once, but you can give him a haircut every two weeks"-Barber's Maxim.

The spectacular collection of one of the world's best woodcarvers.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

Medical history museum featuring a lovely doctor's office from the 1800s.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

The permanent home of Elektro, the celebrity automaton of the 1939 World's Fair.