EK Plotnikova House-Museum

This historical building houses an impressive collection of Russian art from the 18th to the 20th centuries, including works by Karl Bryullov of The Last Day of Pompeii fame (although that one's in St Petersburg). Its main focus, however, is charting the switch to 'critical realism' in the late 19th century, when peasants and other 'common people' became the subjects of paintings.