Overview Welcome to the 64-room, three-story palatial mansion is sometimes referred to as an "American castle. The mansion boasts 53,000 square feet, and originally sat on 400 acres of highland and 620 acres of swamp. It was designed by renowned architect Henry Howard of New Orleans in Greek Revival and Italianate style. Nottoway survived through the Civil War, a variety of owners, and disrepair to become one of the most visited plantations in the South is a testament to its original owner, John Randolph.