The Gordon House, in Cincinnati, Ohio, was built in 1961 by the architect Stanley Prowler. It was commissioned by his friend, and Cincinnati’s urban planner, Norman Gordon. Built in the International Style, the large mid-century modern house features a great open room, 20ft tall, with windows on three sides. It also has a a large screened porch, looking out onto a wooded enclave. It is currently on the market for $750,000.