Wadden Sea National Park is the northern part of the Netherlands. It is partly sea with impressive tides and partly a collection of islands.https://www.waddensea-worldheritage.org
For me, it is the most beautiful part of the Netherlands. I have been there many times but usually during winter and autumn. The problem is (if there is a problem at all) that when I am there it is usually misty and cold.
On the other hand, imagine how nice it is after a cold walk to enter one of the many cafés and enjoy something warm. It would be great to make a sketchbook for every island but that has to wait. In the meantime these are some of the sketches I already made.