If you are looking for an exhibition, a film, a book, a talk about any Polish historical topic, have a look at the website of Dom Spotkań z Historią (History Meeting House).
For example, not too long ago they organized a great exhibition of post-war pictures from 1947 by Henry N. Cobb in colour (!) – I must say it really awoke a strange feeling to see the same, destroyed Warsaw of that time in this strange, almost modern way. Some time ago they had an exhibition “Polacy z wyboru” (English “Poles of their own choice”). Most of their projects are accompanied by publications (available for purchase in their shop).
DSH has a wide range of school programmes – not necessarily interesting for visitors, but nice to know that the children are taught a new way of perceiving history – through, for example, urban games. Together with a wide range of all-historical topics and the way they are discussed, this makes this place a must for all people interested in Polish history. The entrance is always free and all exhibitions are translated into English, which is always a good start for Polish history to you.
As 2018 is the 100th anniversary of regaining independence by Poland, many happenings these days cover these events. Check the DSH’s exhibition about Warsaw pictured from the air.