 However, the ability of such a building to be completely destroyed by fire would be demonstrated by the collapse of the Plasco Building in Tehran in 2017 and the Wilton Paes de Almeida Building in São Paulo, Brazil, the following year.In addition, 7 WTC also sustained significant structural damage during the collapse of 1 WTC from ejected debris.BBC News reported the collapse of 7 WTC twenty minutes before it actually fell.