254 Park Avenue South: Avenue South in Flatiron -

254 Park Avenue South Avenue South in Flatiron - StreetEasy - 254 PAS, 254 Park Ave. South: 254 Park Avenue South, a neoclassical Beaux Arts building located on the northwest corner of Park Avenue and 20th Street, ... 254 Park Avenue South, Manhattan - 254 Park Avenue South, a neoclassical Beaux Arts building located.