1) Port of Rotterdam 
The Waalhaven is a harbour in Rotterdam, Netherlands. It used to be home to an airport, Vliegveld Waalhaven (Waalhaven Airport). It was the first civilian airport in the Netherlands and was opened in 1920. Amongst others, the N.V. Koolhoven aircraft factory was located at this airport. The factory and airport were destroyed in 1940 by German and A...