Sayville became important mainly for its timber and oysters. Beginning in 1868, when the South Side Railroad arrived, the hamlet became a summer tourist destination. Over 30 hotels were built in the area, which hosts a ferry to Fire Island. Between 1880 and 1930, many grand homes and estates were built in Sayville, including Meadow Croft, the home of John Ellis Roosevelt, a cousin of Theodore Roosevelt. Meadow Croft still stands and is part of Suffolk County's San Souci Lakes Nature Preserve.