This original postcard is from the 1933 Century Of Progress (Chicago World's Fair) which was held in Chicago. It is in excellent condition and the front features the "Tower of Water". The reverse side features a postcard format, which is unused and the paragragh states "Soaring to a height equaling Chicago's tallest skyscraper, with streams of water flowing over decorative surfaces of glass & concrete, ect" measures approx. 5 1/2" x 3 1/2"