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Longest single-span roof structure

Longest single-span roof structure
Who
Wembley Stadium
What
315 metre(s)
Where
United Kingdom (London,)
When
2006
The giant steel arch supporting the roof of the north stand of the new Wembley Stadium in London, UK, has a span of 315 m (1,033 ft), making it the world's longest unsupported roof structure. It weighs 1,750 tonnes (3.85 million lb) and is seven metres (23 ft) in diameter. The Eiffel Tower (324 m or 1,063 ft) is just a shade taller than the arch's span.