Michigan Avenue’s premier business address. This Class A, two-building office complex is located in downtown Chicago’s East Loop. The 44-story 205 North Michigan Avenue and 25-story 225 North Michigan Avenue, inspired by world-renowned architect Ludwig Mies van der Rohe, offer abundant amenities, spectacular views, and easy access. Located at Michigan Avenue and Lake Street, Michigan Plaza is the primary entrance to the five-tower, five million square foot Illinois Center office complex, three hotels totaling 3,500 rooms and the East Loop Pedway. Over 18,000 people walk through the doors on their way to offices, over 20 restaurants, banking, and hotels.