You dont say how old your son is...
A nice area is the Veluwe which is the New Forest like bit in the middle of the country west of Arnhem. There is the Kroller-Muller Art Museum which IMO is just about the most interesting cultural place in the whole country.
It's a popular place for Dutch holidays and a lot of the campsites have pools with slides/games areas etc. would be a place to meet other teenagers
A nice area is the Veluwe which is the New Forest like bit in the middle of the country west of Arnhem. There is the Kroller-Muller Art Museum which IMO is just about the most interesting cultural place in the whole country.
It's a popular place for Dutch holidays and a lot of the campsites have pools with slides/games areas etc. would be a place to meet other teenagers