Beautiful grounds The Suffolk County Vanderbilt Museum and Planetarium in Centerport, NY, is a unique estate featuring a mansion, marine and natural history museum, and a state-of-the-art planetarium, all on the former waterfront estate of William K. Vanderbilt II. It showcases Vanderbilt's extensive collections of marine life, ethnographic artifacts, and natural history specimens, alongside the historic mansion, gardens, and the large Reichert Planetarium with its 60-foot dome for celestial sho