The Harmon County Courthouse is located in Hollis, Oklahoma. Built in 1911, this historic building showcases a blend of architectural styles, primarily Romanesque Revival. It serves as the center of local government and houses various judicial functions, including courtrooms and administrative offices. The courthouse is notable for its distinctive clock tower and red brick facade, making it a prominent landmark in the area. It is listed on the National Register of Historic Places, reflecting its significance in the community and its preservation as a piece of local history.