Stock Photo - 31 October 2022, Saxony, Grimma: In the exhibition ""Da Vinci 500-Moving Inventions"" in Wilhelm Ostwald Park, visitors collapse the model of the self-supporting wooden bridge by da Vinci (1452-1519) as museum employee Ilona Brandt (l) explains it, which they can then rebuild. The exhibit is one of 27 of more than 100 functional models developed, designed and built by students from the Department of Engineering and Mathematics at Bielefeld University of Applied Sciences based on sketches by the Italian polymath. Until March 2023, visitors can not only view the models but also try them out and understand technical processes. Photo: Waltraud Grubitzsch/dpa. - Grimma/Saxony/Germany