Guston Borglum Monument You are here Home > Heritage Sites > Guston Borglum Monument This monument honors the birthplace of Guston Borglum, the sculptor of Mount Rushmore. Start address: Use geolocation Choose travel mode DRIVING BICYCLING TRANSIT WALKING Avoid Highways Avoid Tolls Get Directions LocationLook for the monument near the center of town in St. Charles, Idaho Tweet Our address Address: 1 Main St, St Charles, ID 83272 GPS: 42.1114216, -111.3888207