While the developer of Legacy at Millennium Park is cutting prices on some units to unload the final remaining condos, this full-floor penthouse unit will cost a cool $9 million. At 9,500-square-feet, this penthouse space occupies the entire 71st floor of the building. And considering the building's location, one can only assume how amazing the views are going to be from the 71st floor. Every room has floor-to-ceiling windows to show off the incredible views. There's no need to hang any art in this one, the main attraction is the view of Lake Michigan, Millennium Park and the rest of downtown.