Military Museum & Archaelogical Museum
No matter you choose to visit either Military Museum or Archaeological Museum, you have to go to the same place. No matter you want to visit the Military Museum or not, you have to enter the two museums through the entrance under the Military Museum banner. Buying only 1 ticket provides you with the chance to visit two museums. Maybe to some museum-lovers this is a good deal, but not to those who cannot understand Polish for this case.