Links: Museums
Siberia has a long coast line to the Pacific. Here you can about the Russian Navy and the big sea battle in 1905 between Russia and Japan. They also have the only known painting of Vitus Bering.
The Hermitage in Saint Petersburg is a fantastic but also very expensive experience. Here you can find world class art and among other things, big collections from Siberia.
Yes, they do have tanks which have been at service in Siberia fighting the Japanese in 1945. However the real scoop is their very impressive collection of all kinds of tanks from all over the world. Expensive!