|Subject: Rotterdam & Brussels|
It depends on what kind of trip you're planning. What you certainly can do, is visit Rotterdam as well, which is 'cultural capital of Europe' this year? (every year, focus is set on a major European city to show its cultural highlights, organise expositions...). If your trip is nature-oriented, you coud visit the 'waddeneilanden'. If you don't mind traveling a few hours, you could spend a week in Belgium to visit Brussels, Antwerp, Bruges and Ghent as major attractions. Also smaller towns have their charm.