The Harold Pratt House was constructed in 1919 as one of New York’s grand Park Avenue Mansions. The hidden gem of the Upper East Side – We are the perfect location to host a wedding, engagement party, private dinner or other social event. The House consists of six unique rooms connected by a majestic marble staircase. Each room features original chandeliers, fireplaces and views of Park Avenue. Our adjoining Peterson Hall can be used in conjunction with the House to accommodate larger guest counts. We invite you into our home to host your next special moment with us at the Harold Pratt House.