The Tretyakov Gallery is a must-visit for art lovers. It is one of the largest and most important art museums in Russia, housing a vast collection of Russian art spanning from the 11th to the 20th century. The gallery showcases works by famous Russian artists such as Ivan Aivazovsky, Mikhail Vrubel, and Wassily Kandinsky. Visitors can admire the diverse range of paintings, sculptures, and icons that offer a glimpse into Russia's artistic heritage.