Stock up on all your horror paraphernalia at this year-round Halloween emporium.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

This art gallery and oddities boutique bewitches visitors with a trove of occult trinkets and eccentric antiques, work by an ever-changing roster of underground artists, and classes in tarot and other mystic arts.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

The city is full of whimsical portals to another world.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

Rare recess caves fill this unbelievably beautiful Ohio park.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

An unlikely beach paradise of giant sand dunes lies between two lakes just a few minutes from Michigan's cherry country.

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

Where hikers on the Tecumseh Trail can exchange a dirty sock for a free geode.

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

A medical facility that has been kept frozen in time.