30 skyscrapers in a circle of one square kilometre
4371st tallest in the world (shared with 112 other buildings) 4181st tallest on the Northern Hemisphere (shared with 108 other buildings) 588th tallest in North America (shared with 18 other buildings) 478th tallest in the United States (shared with 15 other buildings) 68th tallest in Chicago (shared with 3 other buildings)12th tallest built in 1987 (shared with 1 other building) 11th tallest built in North America in 1987 (shared with 1 other building) 11th tallest built in the United States in 1987 (shared with 1 other building) 2nd tallest built in Chicago in 1987606th most northern skyscraper 7021st most southern skyscraper 337th most western skyscraper 7290th most eastern skyscraper34th tallest within 1 kilometre (1 equally tall building in that area) 68th tallest within 10 kilometres (3 equally tall buildings in that area) 68th tallest within 100 kilometres (3 equally tall buildings in that area) 172nd tallest within 1000 kilometres (4 equally tall buildings in that area) 492nd tallest within 2000 kilometres (12 equally tall buildings in that area) 640th tallest within 5000 kilometres (21 equally tall buildings in that area)41st most floors within 1 kilometre (4 buildings with same floor number) 102nd most floors within 10 kilometres (4 buildings with same floor number) 103rd most floors within 100 kilometres (4 buildings with same floor number) 249th most floors within 1000 kilometres (18 buildings with same floor number) 699th most floors within 2000 kilometres (41 buildings with same floor number) 924th most floors within 5000 kilometres (55 buildings with same floor number)181 metres from the closest taller building