We spent a nice Sunday afternoon in Rotterdam. Rotterdam is about a 30 minute train ride from The Hague and is a more modern Dutch city as it was bombarded by the Germans during World War II.
Below you can see modern day Rotterdam and its skyline. The only "true" skyline in the Netherlands.
The Port of Rotterdam was the busiest port in the world from 1962 to 2004 but has since been taken over by Shanghai and Singapore. Over 36,000 ships and 430 million tons of cargo pass through each year.