A 5-acre (2.0 ha) remnant of the estate, encompassing the former main house and some outbuildings, was listed on the National Register of Historic Places in 1979.

The island was farmed for much of the 19th century by a few families, the southernmost by Robert Lamprey until 1891, when he sold his holding to Frank Eugene Greene, a doctor who made and marketed patent medicines.

Materials for the buildings were brought to the site by boat, and the workmen doing the construction, said to number about 200, camped in tents.

The main house is a large three-story wood-frame building, with a hip roof and clapboarded exterior.

The building has massing that is Colonial Revival, and includes decorative features from Queen Anne and Shingle styles.