This is a PSA, since many people here want to visit the Anne Frank House museum.
From May 1st, you will need to book a time slot for you visit, buying a ticket online in advance. The rule applies to visits up to 15:30. There is a 30-min window for you to enter the museum, but no limitation on how much time you can spend inside. After 15:30, people will be allowed to queue up and buy tickets at the window.
The measure intends to curb the long lines and improve visitor experience.
I'm happy with this new system, I think it is the future for all busy museums, nothing is more wasteful while traveling than standing on long lines to gain admission to museums, monuments etc.