Macy's. Marks the Centennial of its Herald Square Building, "The World's Largest Store". Founded in 1858 on 14th Street, Macy's pioneered the move of the retail trade to the Herald Square area with the opening of this magnificent building in 1902. Designed by DeLemos and Cordes, it is lauded by critics as one of the architectural jewels of turn-of-the-century New York.