The "Tsiolkovsky State Museum" (was called "Tsiolkovsky SPACE Museum" when I was there), has/had a big Buran display when I was the back in the nouties. About 3 hours by train from ( Kievskya station), Moscow.
Not as big as other space museums I have visited, but interesting to get the Soviet angle on it.
Kaluga* is an unremarkable town otherwise, but the old style Soviet hotel down the side road opposite the museum used to served the BEST Borscht.
It also had plentiful hot water, unlike the "Century 21st" hotel they steered tourists towards.
*Kaluga's only other claim to fame is the LARGEST pot hole I have ever seen; so big (wide and a couple of feet deep), the bus I was on went through a field to go around it. I jokingly told a local taxi driver that I didnt understand why the Russian kept claiming to be worried we would invade them - when didnt have a tank that could survive their roads.