"The Glensheen Estate, located in Duluth, Minnesota, is a 39-room, 27,000-square-foot mansion that was once owned by the influential Congdon family. It is considered one of the most prominent examples of 20th century Midwestern architecture. The estate has a dark history, being the scene of a double murder in 1977, but it houses an incredible collection of items, including sheets organized by a maid a century ago and letters in the desk drawer written by a former owner. The estate spans 12 acres and includes a network of trails by Tischer Creek, a sprawling garden, a carriage house, and more."
