Russia’s best collection of Russian art is at the Russian Museum in St. Petersburg - and they let you take photos. The collection is housed in the Mikhailovsky Palace and includes art from the middle ages to 20th century Modernism. Unfortunately the six rooms devoted to Modernism were closed for refurbishing so we didn’t see their paintings by Kandinsky, Malevitch and Chagall. Their important collection of early icons by Andrei Rublev (1360-1430) and others were in glass cases with spot lights on them making photography next to impossible. We spent a full day there (they have a good cafe) and learned much.  Almost all of these artists were new to us and Ilya Repin stands out as one of the best. I didn’t get a photo of the front of the museum because it was raining when we went in and raining when we came out.

Russian Museum