Aon Center, Chicago - Scraperbase.com

Coordinates: 41.885223N 87.621531W 22 skyscrapers in a circle of one square kilometre
78th tallest in the world
78th tallest on the Northern Hemisphere
12th tallest in North America
12th tallest in the United States
4th tallest in Chicago

Tallest built in 1973
Tallest built in North America in 1973
Tallest built in the United States in 1973
Tallest built in Chicago in 1973

523rd most northern skyscraper
6278th most southern skyscraper
393rd most western skyscraper
6408th most eastern skyscraper

3rd tallest within 1 kilometre
4th tallest within 10 kilometres
4th tallest within 100 kilometres
4th tallest within 1000 kilometres
12th tallest within 2000 kilometres
12th tallest within 5000 kilometres

4th most floors within 1 kilometre
6th most floors within 10 kilometres
6th most floors within 100 kilometres
6th most floors within 1000 kilometres
11th most floors within 2000 kilometres
11th most floors within 5000 kilometres

392 metres from the closest taller building

392 metres from the closest at least as tall building

1.39 kilometres from the next skyscraper over 400 metres

392 metres from the next skyscraper over 1000 feet

96 metres from the next skyscraper over 200 metres

96 metres from the next skyscraper

189 metres from the closest skyscraper with more floors

189 metres from the closest skyscraper with at least as many floors

96 metres from the closest skyscraper with at least 50 floors

96 metres from the closest skyscraper with at least 60 floors

189 metres from the closest skyscraper with at least 70 floors

189 metres from the closest skyscraper with at least 80 floors

392 metres from the closest skyscraper with at least 90 floors

1.39 kilometres from the closest skyscraper with at least 100 floors