Around 8,000 artefacts, most associated with the old Wild West, are stacked and scattered throughout the building, gathering dust.
It is a sad, extraordinary sight. From creaking stage coaches to the ghostly skeletons of cacti, there's a bit of everything.
Gloves that may or may not have belonged to Buffalo Bill. A wanted "dead or alive" poster for Jesse James. A horse's hoof, complete with shoe, from the battle of the Little Big Horn. Gorgeous French duelling pistols. A bag full of undertaker's equipment.
And perhaps most bizarre of all: a vampire-killing kit, complete with pistol, stake, mirrors, crosses and a jar of garlic.
(Get yours now - supplies are limited!)