The State Tretyakov Gallery is a famous art museum in Russia that was founded in 1892 by Pavel Tretyakov. It contains over 130,000 exhibits ranging from icons to modern art. Some of the most famous works include Andrei Rublev's Trinity and Kazimir Malevich's Black Square. The gallery building was designed by Viktor Vasnetsov in a Russian fairy tale style and built near the Moscow Kremlin between 1902-1904.