4386th tallest in the world (shared with 110 other buildings) 4187th tallest on the Northern Hemisphere (shared with 106 other buildings) 633rd tallest in North America (shared with 20 other buildings) 515th tallest in the United States (shared with 18 other buildings) 80th tallest in Chicago (shared with 3 other buildings)21st tallest built in 1991 12th tallest built in North America in 1991 11th tallest built in the United States in 1991 2nd tallest built in Chicago in 1991486th most northern skyscraper 6227th most southern skyscraper 412th most western skyscraper 6301st most eastern skyscraper19th tallest within 1 kilometre (2 equally tall buildings in that area) 80th tallest within 10 kilometres (3 equally tall buildings in that area) 80th tallest within 100 kilometres (3 equally tall buildings in that area) 185th tallest within 1000 kilometres (9 equally tall buildings in that area) 519th tallest within 2000 kilometres (19 equally tall buildings in that area) 689th tallest within 5000 kilometres (21 equally tall buildings in that area)14th most floors within 1 kilometre 41st most floors within 10 kilometres (6 buildings with same floor number) 41st most floors within 100 kilometres (6 buildings with same floor number) 76th most floors within 1000 kilometres (10 buildings with same floor number) 179th most floors within 2000 kilometres (21 buildings with same floor number) 220th most floors within 5000 kilometres (35 buildings with same floor number)79 metres from the closest taller building