The museum commemorates an odd event that was over in a day. Although it was a brave if futile mark of resistance to the nazis it is significant in Polish history. There isn't a lot to see in the three small rooms. The sculpture outside is quite impressive. We didn't see the garden area mentioned in other reviews perhaps it was closed on the Friday we visited. Personally I wouldn't recommend this museum though it was cheap to enter, it filled a small period of free time but we were already aware of it from the ww2 museum. The situation at the time of the event is a little difficult to understand and this museum doesn't really explain very well how the nazis Gdańsk and poles existed together just prior to war breaking out. I still find it confusing sadly

The Post Office was the last part of Gdansk to surrender to the invading Nazis in September 1939. All but 4 of the 43 workers in the building at the time were killed. There is a striking memorial to them in front (illuminated at night) and even more poignantly memorials on the wall of the garden area behind the post office where many of the 39 resistors were shot.

My husband and I spent time in this museum on our recent trip to Gdansk. I asked a couple of questions to one of the staff, Maciej Ostrowski, who then spent extra time with us, explaining the history and monuments at this site. Mr. Ostrowski was extremely helpful, knowledgeable and detailed in giving not only facts, but also the emotional context of this moment in Polish and WWII histories.