Open to the public. Construction started in April, 1906, with the dedication held on December 16, 1907. The first story is built of Marquette raindrop sandstone from Michigan. Second and third stories are built of Buff-Bedford limestone from Indiana. The building is classical in architecture. It is fireproof throughout. The dome extends 58 feet above the roof, making it 108 feet from the ground. The courthouse is located on the site of Old Fort Fairmount, built in 1862 at the time of the Dakota (Sioux) Uprising. Listed in the National Registry