Winfield Hall, Woolworth Estate, 77 Crescent Beach Rd, Glen Cove, Long Island, New York, USA
(location of Jason's mansion - it was the real-life summer home of F.W. Woolworth)
Seaview Terrace, 207 Ruggles Ave, Newport, Rhode Island, USA
(some interior scenes)
Mar 26, 1975 - Apr 1975
March 1975 - April 1975