This is Ivolginsky Datsan, the main datsun of Buryatia (A republic within the Russian federation),

The stupas are atop the main building

This is Murochinsky Datsan, also in Buryatia, which is situated near lake Baikal and Mongolia; about 30% of the poulation are Buryats, people related to Mongols who practice a type of Tibetan Buddhism.