Built in 1890 by William Bason of Sayville, the Ice House, the last building on the north side of Connetquot Drive, stands in a heavily wooded area near the former greenhouses and Potting Shed. It is a two story brick structure with two foot thick walls, originally constructed without windows. At the east and west ends are two sets of double doors, one above the other. According to the level of the ice, the appropriate doors could be opened. The ice was swung in and out by a pulley on a hoist attached to the gable above the opening.

After it was completed in 1890, six cars of ice were brought by railroad from New Jersey. However, it was mainly packed with winter ice from local ponds. This ice was, most likely, used to cool containers such as milk cans and ice boxes, and not in food or drink. In 1902 the Suffolk County News stated, "The ice house on the Vanderbilt estate has been filled with one hundred tons of ice from Cutting's pond." (The estate immediately to the west, across the Connetquot River, and owned by W. Bayard Cutting) The ice was four inches thick.

During the past thirty years, with windows and doors cut through the thick brick walls, the Ice House has served as the residence of the former president of Dowling College, Allyn P. Robinson, as a nursery school, and as a private house. Today it is the home of the Dowling Institute, an outreach to government agencies, business, and community organizations in the form of educational programs designed to meet the needs of their members.

One more wonder - The Bowling Alley.