Opening Hours
Tuesday to Friday 11am - 5pm
Sunday 1 – 5pm
The observatory is open to the public every Friday and Saturday evening up until April 10. The public observation sessions are held between 8 and 9:30pm; booking is essential (www.sonnenborgh.nl) Admission: Adults €8, Children: €5.

Admission Prices
Adults €6.00
Children from 4 to 17 years €3.00
65+/u-pas/cjp/students €3.50
Museumkaart free
Group rate (min. 10 pers.) €4.00 pp

Guided Group Tours
1 or 1.5 hrs (excl. admission):
Cost for a group of 1–15 people, 1 hrs € 40.00
Cost for a group of 1–15 people, 1.5 hrs € 55.00
It is also possible to arrange group tours outside opening hours.