 The original model of the Millennium Monument was the starting point of the Peristyle appearance in Chicago . To this day , it is said to not compare to the once “ commanding presence ” that once stood in its place , before being demolished and replaced with an underground parking garage . The new monument was downsized by approximately 15 % to accommodate a wheel @-@ chair ramp for the disabled in a tight space . It also includes a “ classical ” take on the original , incorporating a fountain at the base of the limestone , Doric , column monument . The monument , despite being relatively small in comparison to the rest of Grant Park , makes it presence known as the central focus to shape Wrigley Square and the surrounding landscape . Wrigley Square is unique for its fountain that , unlike Buckingham Fountain , which is fenced off , remains open with a circular ledge to allow park @-@ goers the freedom to sit next to the open water to enjoy the atmosphere . 
