It's a view that shouldn't be missed. The Sears Tower offers a 360-degree panorama of Chicago's skyline from North America's tallest building, which soars 1,353 feet high. Admission into the Sky Deck is $9.95 for adults, and $7.95 for seniors. Aside from the view, visitors can check out the interactive, museum-quality exhibits. It is open from 10 a.m. to 10 p.m. in May. To avoid long lines, the best time to visit is after 4 p.m. The Sears Tower is located at 233 S.