The Western Museum of Mining & Industry is a museum dedicated to mining in Colorado that contained a Labyrinth entrance in it. The entrance was destroyed along with the Labyrinth itself when Nico di Angelo took Daedalus' spirit out of his automaton body.
Percy Jackson and the Olympians[]
The Battle of the Labyrinth[]
Rachel spots an entrance to the Labyrinth while being driven around the area. Once she finds the entrance, Percy, Annabeth, Nico, and her enter the Labyrinth once again.