From August 14 upto September 3, 2017 you can earn the 2nd free admission ticket at Albert Heijn . This is possible for over 300 day-outs and short trips, amongst them Museum Castle Wijchen.
For each 10 Euro you spend at AH you receive 1 saving stamp. With 5 stamps your card is full! You can save upto September 3. Trips can be booked upto January 28, 2018 via ahuitjes.nl. Vouchers and full cards can be spent upto April 2, 2018.