This is the actual house where Anne Frank lived in hiding with her family for more than two years during World War II.
Lines can be extremely long: if possible, choose a less popular time to visit and book tickets in advance on http://www.annefrank.org/en/Museum/Practical-information/Online-ticket-sales/
Adults: euro 9,- Free admission with Dutch Museum Card
9.00 - 17.00
Zoo, Planetarium and -next door- the Microbia museum. The nearby hortus garden + greenhouses is also worth a visit.