The Hubschraubermuseum Bückeburg (Bückeburg Helicopter Museum) is located in the German town of Bückeburg, 30 miles (50 km) to the west of Hannover. The world’s only and unique helicopter museum has been located since 1971 in the historical listed building ‘Burgmannshof’ at the Sablé Place. Already Leonardo da Vinci dealt with air vehicles that were heavier than air. His sketch of a helical screw from 1483 became the basis of helicopter aviation. More than 40 original exhibits such as single-rotor and multi-rotor helicopters, gyrocopters, and winged helicopters, many assemblies and components as gears and propulsion units, as well as a great number of models are shown on 2000 square meters.