Irving wrote a story, "Wolfert's Roost", about Acker and the site. In a letter to his brother Peter, he described it as "a beautiful spot, capable of being made a little paradise ... I have had an architect up there, and shall build upon the old mansion this summer. My idea is to make a little nookery somewhat in the Dutch style, quaint, but unpretending. It will be of stone." Irving requested that his friend and neighbor, English-born painter George Harvey, become his aesthetic collaborator and foreman in the house's subsequent remodeling and enlargement, and the landscaping of the grounds in Romantic style, which included creating a pond Irving called "The Little Mediterranean", with a waterfall that led to a babbling serpentine brook.