Westbrook, a large rambling house of many gables and tall chimneys on the South Shore of Long Island, lies on the west bank of the Connetquot River.

[1] Westbrook was designed in 1886 for William Bayard Cutting (1850–1912) by the architect Charles C. Haight in the Tudor Revival style.

Scottish heather was shipped to provide thatch for the gate house, which remains at the corner of Montauk Highway and Great River Road.

[2] The house and its extensive landscaped grounds, now a state park called the Bayard-Cutting Arboretum, are open to the public, having been given to the people of Long Island by Bayard Cutting's widow and daughter "to provide an oasis of beauty and quiet for the pleasure, rest, and refreshment of those who delight in outdoor beauty; and to bring about a greater appreciation and understanding of the value and importance of informal planting."

[3] She was a lifelong friend of the Cuttings and a professionally trained landscape architect who worked for a time for the great American gardener Beatrix Farrand, who had a commission at Westbrook at the beginning of her career.