Redstone is an unincorporated town and a census-designated place (CDP) located in and governed by Pitkin County, Colorado, United States. The CDP is a part of the Glenwood Springs, CO Micropolitan Statistical Area. The population of the Redstone CDP was 130 at the United States Census 2010. The Carbondale post office serves Redstone postal addresses. The village is listed on the National Register of Historic Places as a historic district and includes several properties that are also separately listed on the National Register. History Redstone was established in the late 19th century by industrialist John Cleveland Osgood as part of a coal mining enterprise. Osgood's coal empire also spurred construction of the Crystal River Railroad and Redstone's historic dwellings. As an experiment in "enlightened industrial paternalism," Osgood constructed 84 cottages and a 40-room inn, all with indoor plumbing and electricity, for his coal miners and cokers, as well as modern bathhouse facilities, a club house with a library and a theatre, and a school. Most of these Craftsman-era Swiss-style cottages are still used as homes. Cleveholm A dominant feature of Redstone is Cleveholm Manor, commonly called "Redstone Castle," an opulent 42-room Tudor-style mansion that Osgood built for his second wife, Swedish Countess Alma Regina Shelgrem. Construction of Cleveholm Manor, which was designed by New York architects Boal and Harnois, began in 1897 and was completed in 1901. The Castle was part of a estate that also included servants' quarters, a gamekeeper's lodge, a carriage house, and a greenhouse. Cleveholm Manor and the gamekeeper's cottage are both independently listed on the National Register as Osgood Castle and Osgood Gamekeeper's Lodge, respectively. As of 2004, the Castle still contained 75 percent of its original furnishings. The historic inn in Redstone, which is independently listed on the National Register as Redstone Inn, is now operated as a resort inn, offering year-round accommodations. Geography The Redstone CDP has an area of , all land. Climate Redstone has a humid continental climate (Koppen: Dfb). Summers are warm with cool nights and winters are cold with extremely heavy snowfall averaging 170 inches (430 cm) annually. Demographics The United States Census Bureau initially defined the for the See also Colorado Outline of Colorado Index of Colorado-related articles Bibliography of Colorado Geography of Colorado History of Colorado Colorado statistical areas Glenwood Springs, CO Micropolitan Statistical Area List of counties in Colorado Pitkin County, Colorado National Register of Historic