try to find 6 flags theme park! Awesome to get blazed and walk about it! it approx 2 hours out of a'dam but well worth it , don't go alone cos youll get lost, and wake up sodomised in a bath tub full of ice, less one kidney.
Pretend not to speak english and ignore people who try to ask you for change for various ( and almost convincing) stories etc . These people do it for a living.
If your an american , tell people your canadian instead, things will go alot smoother lol
go to the grass hopper at night , and sit on the deck , usually they have a little light show.
peace