Formerly the Oakland Mill, Costello's Old Mill Gallery was built in 1867 as a water-powered turbine supplying power to grind wheat. It later served as a cattle barn before being remodeled into a home and art gallery featuring the art of Patrick J. Costello.
Hours: 10-5 Thu.-Sat., or by appointment
Address: 22095 Hwy 64
Come visit us in Maquoketa, Iowa