This museum has a selection of personal/family photos and momentos and a film about the artist. There are a range of the styles he created and the range of his work is much wider than just the posters I was familiar with before going.

Also if you are also going to the fantastic Kafka museum (highly recommended – across Charles Bridge not the exhibition by the old town square) then go here first and buy half-price tickets to the Kafka museum here (even half student price tickets are available). We did them the wrong way round and paid full price for both. They were still worth the full price charge (120 Kc adults, 60 Kc students – currently ~ 40 Kc to the British pound).