Taipei 101

Coordinates: 25.033678N   121.56488E 4 skyscrapers in a circle of one square kilometre
15th tallest in the world
15th tallest on the Northern Hemisphere
14th tallest in Asia
Tallest in Taiwan
Tallest in Taipei

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Tallest built in 2004
Tallest built in Asia in 2004
Tallest built in Taiwan in 2004
Tallest built in Taipei in 2004

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4515th most northern skyscraper
3148th most southern skyscraper
6670th most western skyscraper
993rd most eastern skyscraper

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Tallest within 1 kilometre
Tallest within 10 kilometres
Tallest within 100 kilometres
7th tallest within 1000 kilometres
11th tallest within 2000 kilometres
12th tallest within 5000 kilometres

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Most floors within 1 kilometre
Most floors within 10 kilometres
Most floors within 100 kilometres
6th most floors within 1000 kilometres (1 building with same floor number)
8th most floors within 2000 kilometres (2 buildings with same floor number)
9th most floors within 5000 kilometres (2 buildings with same floor number)

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690 kilometres from the closest taller building
690 kilometres from the closest at least as tall building

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538 kilometres from the next skyscraper over 400 metres
299 kilometres from the next skyscraper over 1000 feet
241 metres from the next skyscraper over 200 metres
241 metres from the next skyscraper

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690 kilometres from the closest skyscraper with more floors
690 kilometres from the closest skyscraper with at least as many floors
343 metres from the closest skyscraper with at least 50 floors
256 kilometres from the closest skyscraper with at least 60 floors
299 kilometres from the closest skyscraper with at least 70 floors
299 kilometres from the closest skyscraper with at least 80 floors
690 kilometres from the closest skyscraper with at least 90 floors
690 kilometres from the closest skyscraper with at least 100 floors