MacCready Gossamer Albatross
The Gossamer Albatross is a human-powered aircraft built by American aeronautical engineer Paul B. MacCready's company AeroVironment. On June 12, 1979, it completed a successful crossing of the English Channel to win the second Kremer prize worth £100,000 (equivalent to £492,000 in 2025).
Source: Wikipedia — MacCready Gossamer Albatross (CC BY-SA 4.0)