Cottonwood County’s now-dry Mountain Lake was the site of Indigenous villages and encampments over the course of 3,000 years. The area has provided clues—some of the oldest evidence of human habitation in present-day Minnesota—about the lives of a group of people who remained relatively isolated from Upper Mississippi trade networks. In the 1970s, the site was developed into a public park operated by Cottonwood County.

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.

Jeffers Petroglyphs is an internationally significant Native American sacred site and the location of the largest group of Indigenous petroglyphs (rock carvings) in the Midwestern United States. Situated in Dakota homeland, it is sacred to multiple Native American nations, including the Cheyenne, Arapaho, Iowa, and Ojibwe.

Talcot Lake County Park, a forty-acre piece of land situated in Cottonwood County on Highway 62 between Windom and Fulda, offers visitors a place to appreciate the wildlife and natural beauty of Southbrook, the county’s southwestern-most township.

In 1957, a group of German clubs based in the Twin Cities came together to form the Volksfest Association, which represented German Minnesotans at that year’s centennial statehood celebration. After the centennial, eager to obtain an official building, it raised money through selling bonds and organizing fundraising events. In 1965, it purchased a home on Summit Avenue for $57,500 and refurbished the interior to accommodate large social gatherings.

In the mid-twentieth century, Anoka County's Carlos Avery Game Farm helped to build populations of dwindling game bird species, such as the bob white quail, chukar partridge, and ring-necked pheasant. A National Register-listed historic district since 1991, it is now part of the nearly 25,000-acre Carlos Avery Wildlife Management Area (WMA) and has become a reserve for deer, waterfowl, and other woodland animals and birds.

The David Park House in Bemidji is an outstanding example of residential Streamline Moderne architecture. It was placed on the National Register of Historic Places in 1988.

Mille Lacs Indian Trading Post debuted its services as a general store for the Mille Lacs Band of Ojibwe in 1918. In future decades, it evolved into a center for local Ojibwe to trade and sell their art and educate visitors about Ojibwe culture.

The Kline Sanatorium was built in 1902 by Dr. James Kline and served hundreds of patients before it closed in 1935. Serving as a shelter for those left without homes in the wake of a 1939 tornado, the building again provided relief for people in the area. Later, it served as a hotel and then as a private residence and apartments. It remains one of the city of Anoka’s more iconic structures, clearly visible as you enter the city from across the Mississippi River.

Authorized in 1941, the Twin Cities Army Ammunition Plant (TCAAP) contributed to United States military efforts for more than fifty years. Economic and environmental impacts extended beyond the New Brighton/Arden Hills site into the greater Twin Cities area.