A working re-creation of Leonardo's 15th Century Catapult, Ornithopter, Crossbow and Aerial Screw. 

Leonardo da Vinci is widely recognized as one of the greatest minds in history, and his designs are a testament to his incredible imagination and skill. From his sketches of flying machines and military weapons to his plans for grand architectural feats and innovative engineering projects, da Vinci’s designs are still admired and studied today.