2 admission tickets to Glensheen mansion, valued at $20 each, expire April 2026.

Glensheen, the Historic Congdon Estate is a 20,000 square foot mansion in Duluth, Minnesota, United States, operated by the University of Minnesota Duluth as a historic house museum. Glensheen sits on 12 acres of waterfront property on Lake Superior, has 39 rooms and is built in the Jacobean architectural tradition, inspired by the Beaux-Arts styles of the era. The mansion was constructed as the family home of Chester Adgate Congdon, who was an American lawyer and businessman. He was a prominent figure in the development of the mining industry in northern Minnesota.