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In page Trebuchet:

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The largest currently-functioning trebuchet in the world is the 22,000-kilogram (49,000 lb) machine at Warwick Castle, England, constructed in 2005. Based on historical designs, it stands 18 metres (59 ft) tall and throws missiles typically 36 kg (80 lbs) up to 300 metres (980 ft).[citation needed] The trebuchet gained significant interest from numerous news sources when in 2015 a burning missile fired from the siege engine struck and damaged a Victorian-era boathouse situated at the River Avon close by, inadvertently demonstrating the weapon's power.[4] It is built on the design of a similar trebuchet at Middelaldercentret in Denmark.[5] In 1989, Middelaldercentret became the first place in the modern era to have a working trebuchet.[5]