We went here to see the Escher exhibition (on till Jun/Jul 14) on the top floor, which was really good. Also here are rally interesting exhibits regarding Dutch Empire/colonies and slavery. Interesting ledger with number of slaves on ship, what they cost, how many died, what they sold for. Many activities for children. Listen to world music, play African drums, visit a yurt, and the 'learn to yodel in 13 seconds' booth. Handy lockers to leave bags/coats for 1 Euro deposit.