 Complete the following phrase:  One of the most notable art museums in Moscow is the Tretyakov Gallery, which was founded by Pavel Tretyakov, a wealthy patron of the arts who donated a large private collection to the city. The Tretyakov Gallery is split into two buildings. The Old Tretyakov gallery, the original gallery in the Tretyakovskaya area on the south bank of the Moskva River, houses works in the classic Russian tradition. The works of famous pre- 