Hay House is a National Historic Landmark and a property of the Georgia Trust for Historic Preservation. Built between 1855 and 1859, the 18,000 square-foot mansion welcomes 20,000 visitors each year. Hay House is open free of charge twice a year for Hay Days, educational family-oriented events with live music, carriage rides, and hands-on activities. In addition to regular tours and special events, Hay House is also available for weddings, receptions, banquets and other occasions.