Tickets can be bought online three or more days in advance, which, if you're some kind of super-planner, is a smart move because visitor numbers are controlled and you could be disappointed if the museum is too busy. In fact, groups over 15 people are obliged book in advance. To get to the museum take a tram to Pl. Bohaterów Getta and it's a 5-10 minute walk down ul. Kącik, under the train overpass, onto ul. Lipowa and you're there.