Curwood Castle Museum
Built by author James Curwood, this mini-castle is now a museum. The writer, who had the house built in 1922-1923, used one of the turrets as his writing studio - which sounds just lovely. Surprisingly, the castle, located on a river bank, wasn't used as a true home - it doesn't have any eating or sleeping areas. The writer used it solely for his work and to entertain guests.