This city's Meigs Field Airport was destroyed in the middle of the night and was located on the man-made peninsula named Northerly Island, which also contains its Adler Planetarium. That peninsula is also home to the Shedd Aquarium which lies across a small inlet from this city's Navy Pier. This city is home to a building with a "bundled tube" design that was the tallest in the world until 1998 and changed its name to Willis Tower in 2009. Anish Kapoor's Cloud Gate is located in this city's Millennium Park. For 10 points, name this seat of Cook County, the largest city in Illinois
a) Chicago
b) Springfield
c) Peoria
d) Rockford