The Fannin County Courthouse in Bonham was built in 1888-1889 of rough-cut local limestone by stonemasons Kane and Cormack. It was designed in the Second Empire style of architecture by architect Wesley Clark Dodson. It's central clock tower and elaborate roof were destroyed by fire in 1929 and were replaced by a flat roof. The courthouse was modernized in 1965 including a smooth exterior surface so that the building resembled the Moderne or plain Art Deco style.
After receiving a grant from the Texas Historical Commission, the building was restored to its original 1888 design.