The Riedel’s/Circle S Ranch bunkhouse is significant for its association with dude ranching from ca. early 1930s to the ca. early 1940s. The building represents the growing popularity of dude ranching in Colorado, as it was formed by joining two existing buildings together, a ranch hand bunkhouse and a log cabin to provide accommodations for ranch guests. After purchase Jack W. and Harriet R. Riedel began dude/guest ranch activities during the summers. Welcoming guests to the western setting, which ranchers had done for decades, took on added importance in the 1930s as a way to add an additional source of income during difficult financial times. Additionally, the bunkhouse is a representative example of a Rustic-style dude ranch guesthouse/bunkhouse. The Rustic style was often employed in mountain settings for lodges, vacation homes, and other resort facilities. This building’s Rustic architecture displays log walls; a gable roof; a full-width porch with log posts, bracing, and railing facing a scenic view; and multiple entrances on the front, some featuring ornamented Dutch wood doors. The bunkhouse reflects the common practice of ranch owners reusing existing buildings for new purposes. In this case, a cabin and an old bunkhouse were connected to form a new building ca. 1930s.