Considering the Kasteeltje Hattem in Roermond?
A VT member wrote the following comment about visiting Roermond:
Water recreation - De Weerd by elPierro
De Weerd is one of the many water recreational area's of the city. It's located at one of the maasplassen en is one of the few spots without much boats around, the terrain itself is open during summer when the weather is good.The main features are a small sandy beach (dirty water though) and facilities for wind surfing.