The Vanderbilt Museum in Centerport occupies William K. Vanderbilt II’s former Eagle’s Nest estate on Long Island’s North Shore, developed between 1910 and 1936 around a 24-room Spanish Revival mansion designed by Warren and Wetmore. Vanderbilt amassed marine, natural history, and ethnographic collections there, and his will directed that the property become a county museum. Established in 1950, the museum grew from the house and surrounding buildings into a larger complex with displays, gardens, and specialized structures, later adding a planetarium and observatory. The site reflects both the estate’s architecture and its unusual transformation from private residence to public museum.