Access to the Open Harlingen Museum itself is free, as it is an open-air, street-level museum. There are no entrance fees.
The Open Harlingen Museum operates on a unique model where the city's public spaces serve as the museum. Therefore, there is no traditional entrance fee or ticket required to experience the exhibits. Information panels and historical markers are freely accessible in Harlingen's streets and public areas.
While the museum itself is free, visitors might incur costs related to complementary experiences. For example, obtaining a physical map or guide from the local VVV (tourist information office) might have a small fee. Additionally, any audio guides or digital app features offered by third parties might also come at a minor charge. However, the core museum experience remains universally accessible to all without cost.