Perched on top of the 12th floor of 55 East Eerie Street, this four story, 4,325 square foot unit offers a single family home style of living in the middle of the busy Magnificent Mile district. Dubbed a "skyhome" by its listing agent, the description is actually not too far off as the home really does appear to be part of a short section of townhouses hoisted on top of a downtown building. The unit itself is quite luxurious and has access to all of the building's amenities, but the greatest part has got to be the huge private deck that comes along with it — all 1,132 square feet of it. Sure, a couple of fireplaces are nice, and so is a private elevator and custom built-ins, but the rooftop space and views are what really make this one stand out. It can be had for $2.95 million plus an additional $2,333 per month in assessments.