The Coast Guard station at Grand Marais was built in 1928 to aid the people who traveled and worked on the sometimes turbulent waters of Lake Superior. Since the opening of the station in 1929, Coast Guard personnel from the station have rescued hundreds of fishermen, boat crews and passengers, and recreational boaters from the lake.

Spanning a narrow stretch of the Mississippi River in Bemidji, the Nymore Bridge is a notable example of early-twentieth-century construction. Completed in 1917, it owes its success to innovative engineering, attractive design, and local funding. It was added to the National Register of Historic Places in 1989.