On 20 June 1540 Joao Torto, a Portuguese resident in Viseu Portugal, who had built two pairs of cloth-covered wings, an upper and lower, which are connected by iron hoops, climbed to the top of the Cathedral of Viseu where he had built, with the permission of the Church, a launching ramp.
The event took place at around five o'clock in the afternoon, in front of an expectant crowd. According to the reports of the time, he partly managed to fly, but crash landed on the roof of the Chapel of São Mateus which caused injuries that led to his death.