Last weekend it was national monument day in the Netherlands. During this event it is possible to see the inside of certain monuments. My big thanks go to the volunteers who make this possible.  Very nice how the history of the buildings was explained. Thanks to this event I was able to take beautiful pictures of the inside of the buildings. I did make the mistake of walking into Rhijnestein Castle because the door was open. The owner was busy bringing stuff in so the door was open. This allowed me to have a nice chat with the very friendly owner.