4 March > 30 June: open everyday from 9 am to 6 pm
1 July > 9 August: open every day from 9 am to 7 pm
15-16 July - 22-23 July - 29-30 July: open from 9 am to 12 pm
10 > 20 August: open every day from 9 am to 12 pm
21 August > 1 november: open every day from 9 am to 6 pm
From Monday to friday the entrance ticket is 2€ for adults, from Saturday to Sunday or bank holidays is 6€ and it includes two guided visits.
Children under 12 years enter ALWAYS free, as well as people with disabilities.
For excursions we recommend practical and comfortable clothing, sports shoes, and a long-sleeved t-shirt for the guided tour in the tunnels of dam.