Holzwarth Historic District, Historic ranch district in Rocky Mountain National Park, Colorado.

Holzwarth Historic District is a former guest ranch in Kawuneeche Valley, Grand County, Colorado, with rustic log cabins on both sides of the Colorado River. The Mama Cabin, the original homestead, and the Rose Cabin are among the structures; Joe Fleshut's cabin, built around 1902, is the only one remaining on the east bank.

John Holzwarth Sr., a Denver saloonkeeper, took up a homestead in Kawuneeche Valley in 1917 after Colorado enacted prohibition in 1916, receiving the patent in 1923. Guest ranch use began in 1919, and the opening of Fall River Road to Estes Park in 1920 brought visitors. John Holzwarth Jr. ran the ranch until The Nature Conservancy bought it in 1974; the National Park Service acquired it in 1975.

The ranch took its names from its owners and setting: first Holzwarth Trout Ranch, later Never Summer Ranch. The Mama Cabin, the original homestead, and the Rose Cabin are among the cabins that remain. Joe Fleshut's cabin, built around 1902, is the only structure left on the east side of the Colorado River.

The site is open during summer months and offers guided tours to help visitors understand life in this period. Walk slowly through the area and take time to notice details about how the buildings are constructed and arranged.

The east bank of the Colorado River once held most of the ranch buildings; today only Joe Fleshut's cabin remains there, built around 1902. The rest of the structures stand on the west side, so the river itself marks where the working ranch was divided.