On the edge of the Dordtse Biesbosch, you will find Mercurius Observatory. It is worth visiting both in the evening and during the day.
See the exhibitions on astronomy, meteorology and space travel. Up in the Dome, use the Carls Zeiss telescope built in 1922 to look at our 'own' star, the sun, during the day.
In the evening, on a clear day, look up at the fantastic starry sky...and enjoy, because nature reaches further than the tops of the trees.
For schools and groups, all planets of our solar system are examined in a short presentation. Of course, the observatory staff will answer your questions. After the presentation you go to the dome, where you can study the sky with the Carl Zeiss telescope from 1922 on a clear day.