O = Osgood Castle
Osgood Castle is located in Redstone Colorado. It was built in the early 20th century as the home of John C. Osgood. He made his fortune as a coal and steel pioneer in the west, and was the founder of the Colorodo Fuel and Iron Company. Osgood developed a town of Redstone as a model company town, part of his experiment. Many businessman from around the world came to visit, and it was dubbed the "Ruby of the Rockies." It is now open for public tours, and events.
Some say the castle is haunted though. Cigar smoke is smelled suddenly in rooms of the castle, and sometimes chairs are dragged from one corner of the room to the other. Maybe Mr. Osgood still keeps watch over the castle.