The Anne Frankhuis museum is going to be renovated with several changes.
During this period, it will no longer possible to show up and queue after 15.30 at the entrance. Only visitors with reserved timeslots will be admitted
http://www.annefrank.org/en/Museum/Practical-information/Opening-hours-prices-and-location1/
Due to renewal work, from 16 October 2017 admission to the Anne Frank House is temporarily only with an online ticket with a timeslot.