Originally built in 1916 for Franklin D. Roosevelt's Secretary of the Treasury, William H. Woodin, this three-story residence is attributed to renowned architect Grosvenor Atterbury, a visionary of American residential design. Nestled within the prestigious​ Original Summer Colony, the home-known as "Dune House"-​offers commanding views of the Atlantic ocean from its dramatic perch atop a soaring dune​s. Meticulously preserved and thoughtfully updated over the decades, Dune House blends classic East Coast elegance with timeless architectural detail. The 2.85-acre oceanfront estate offers unmatched privacy and a rare sense of scale, while rolling lawns and mature coastal landscaping frame the home's impressive façade and sprawling seaside terraces. In addition to the primary parcel, the offering includes a separate 1.85-acre off-ocean buildable lot, presenting a unique opportunity to create a compound. With its unmatched history, architectural pedigree, and development potential, Dune House stands as one of the most significant properties ​and generational opportunities in East Hampton.