Nautilus – a 38-acre private island in Castine Harbor, Maine, on Penobscot Bay – is to be auctioned on October 18, 2012, at Dennetts Wharf Restaurant, 15 Sea Street, Castine. Looking across the bay at Islesboro and the Camden Hills, the property is rich in history and breathtaking scenery. The three-story main residence rests on the bluff. It includes a library,powder room, large living room, office, foyer, butler’s pantry, professional kitchen,formal dining room. 5 bedrooms, and 3 bathrooms.