Willis Tower and its Skydeck sit above South Wacker ... it's open Sunday to Friday from 9 a.m. to 8 p.m. on Saturday until 9 p.m. General admission starts at $32 for adults and $24 for children ...

For its eighth annual "Love on the Ledge" contest, Skydeck Chicago is letting four couples tie the knot, or renew their vows, at the top of the Willis Tower. The ceremony will occur on The Ledge ...