The First United Methodist Church in Mangum is one of the best preserved examples of early-day church architecture in Western Oklahoma. Building began in 1909 and construction cost totaled $25,000. James E. Flanders of Dallas was the architect who designed the church and was considered to be the foremost architect of the 19th century. Imported stained glass windows and an Estey pipe organ, Opus 2362, were installed in 1925. The organ is still played every week.