Col. Oliver Hazard Payne Estate is a historic 60-acre (24 ha) estate, also known as Omega and Wiltwick, located on the west bank of the Hudson River at Esopus in Ulster County, New York, United States. The estate features a 42,000-square-foot (3,900 m2) Beaux Arts-style Mediterranean palazzo with an open courtyard. It was designed in 1905 for Col. Oliver Hazard Payne by the architect Thomas Hastings of the firm of Carrère and Hastings, who also designed the New York Public Library and the Henry Clay Frick House. The estate is currently owned by Marist College and operated as the Raymond A. Rich Institute for Leadership Development.