Both Museum de Fundatie Zwolle and Kasteel het Nijenhuis are open from Tuesday to Sunday, from 11:00 AM to 5:00 PM.
Museum de Fundatie Zwolle is open free of charge to everyone on the first Friday evening of every month, from 5:00 PM to 9:00 PM, for Fundatie Friday. On the first Sunday of the month, the museum opens from 10:00 AM for Silent Sunday.