Ve R.
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Little museum, which gives info about photography history in Estonia. One room shows the development of photography and famous photographers in Tallinn and Estonia. Second room has shelfs with different old cameras. Then there are rooms with different exhibitions of modern photographers.
We had a guided excursion, which was very interesting, as the guide could give much more info, than it was written there. Also the guide told us a lot of interesting stuff about old cameras standing on the second floor of the museum.
I would definitely recommend visiting this museum, if you are interested in photography history. But the guided tour would be more informative, than just walking around on your own.