The world's most iconic home thermostat was created in Minneapolis. The Round, designed by engineer Carl Kronmiller and designer Henry Dreyfuss, was introduced in 1953 by the company then known as Minneapolis-Honeywell. The Round became both a sales mainstay and a world-renowned piece of industrial art.
When Bernard Pietenpol started to build airplanes in his Cherry Grove workshop, he had never actually piloted one. He only learned to fly once he had built his first plane. Nevertheless, Pietenpol's popular designs for lightweight, easy-to-construct airplanes made him the "father of the homebuilt aircraft movement."