Built in 1934 by the CCC on the Chippewa National Forest, along with a towerman’s cabin and garage, Boulder Hill Tower remained in active service until the late 1960s. In 1976 the 100’ steel tower with 7’ x 7’ metal cab was moved to the Forest History Center in Grand Rapids, MN, but not open to the public. Restored to its original condition in 1997, the tower is now staffed by interpreters and open seven days a week from Memorial Day through October 15. It is one of the most climbed towers in the U.S.