The New York City Parks Department invited five architects to submit designs for the 22nd Precinct Station and a stable-riding ring complex for the public and the mounted police. In addition to Marcel Breuer and Associates, Edward Larrabee Barnes, Kelly and Gruzen (the eventual winners of the competition), Philip Johnson, and Whittlesey, Conklin & Rossant participated in the competition. Breuer’s design consisted of three low buildings. The riding ring was the most visually dramatic structure and combined the folded, thin-shell wall developed with Pier Luigi Nervi for the Assembly Hall of the UNESCO Headquarters, with the dramatic large-span arch of the Litchfield High School Gymnasium, here made of reinforced concrete rather than laminated plywood. Advocacy groups fighting to preserve Central Park forced the Parks Department to abandon even Kelly and Gruzen’s winning scheme.