Caldwell's Opera House is Caldwell's oldest building. The building housed Caldwell's fist opera house in 1879 and boasts a colorful history, including the site of a shootout between Caldwell citizens ... Caldwell Opera House
The Caldwell Post Office, built in the 1930s, is listed on the National Historic Register, as it displays one of the collection of murals commissioned during the Depression Era by the WPA.
The mural, "Cowboys Driving Cattle," was painted by Kenneth Evett in 1941.
Caldwell, the Border Queen, has seen wild days as a cowtown beside the Chisholm trail, a brief period of booming times during the Oklahoma Land Rush days, and quiet prosperity based on the vast grain fields of Sumner County.