Summerschool Junior of Utrecht University, I took the other two girls to the Ontdekhoek. On arrival it didn't look very spectacular, but it really appeared to be a fantastic place. A great number of diy-activities for kids and adults (as long as they don't explain things to the children): making your own spoon, booklet, photo, boats, dikes, fries (from the start), street organ music, soap, coins etc. We were there for four hours and just half way all options. A good reason to go back another time.