15 skyscrapers in a circle of one square kilometre
7475th tallest in the world (shared with 151 other buildings) 7127th tallest on the Northern Hemisphere (shared with 138 other buildings) 1034th tallest in North America (shared with 31 other buildings) 831st tallest in the United States (shared with 29 other buildings) 122nd tallest in Chicago (shared with 2 other buildings)70th tallest built in 1999 (shared with 2 other buildings) 4th tallest built in North America in 1999 (shared with 2 other buildings) 4th tallest built in the United States in 1999 (shared with 2 other buildings) Tallest built in Chicago in 1999514th most northern skyscraper 7113th most southern skyscraper 359th most western skyscraper 7268th most eastern skyscraper36th tallest within 1 kilometre 122nd tallest within 10 kilometres (2 equally tall buildings in that area) 122nd tallest within 100 kilometres (2 equally tall buildings in that area) 311th tallest within 1000 kilometres (6 equally tall buildings in that area) 848th tallest within 2000 kilometres (26 equally tall buildings in that area) 1125th tallest within 5000 kilometres (31 equally tall buildings in that area)24th most floors within 1 kilometre (2 buildings with same floor number) 59th most floors within 10 kilometres (4 buildings with same floor number) 59th most floors within 100 kilometres (4 buildings with same floor number) 116th most floors within 1000 kilometres (14 buildings with same floor number) 299th most floors within 2000 kilometres (41 buildings with same floor number) 388th most floors within 5000 kilometres (55 buildings with same floor number)70 metres from the closest taller building