The KBR museum is closed on Mondays and the following holidays:
- 1 January (New Year’s Day)
- 17 and 18 April (Easter)
- 1 May (Labour Day)
- 26 May (Ascension Day)
- 6 June (Whit Monday)
- 21 July (Belgian National Day)
- 15 August (Assumption Day)
- 1 November (All Saints’ Day)
- 11 November (Armistice Day)
- 25 December (Christmas)