Foto de stock - 31 October 2022, Saxony, Grimma: In the exhibition ""Da Vinci 500 - Moving Inventions"" in Wilhelm Ostwald Park, a visitor stands with her child behind the model systems for water transport - which is attributed to the Greek inventor Archimedes (287 BC, l) and was further optimized by the Italian polymath da Vinci (1452-1519) (r). The exhibit is one of 27 of more than 100 functional models developed, designed and built by students in 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