Konstantin Stanislavsky (born Alexeyev) was an outstanding Russian and Soviet theatre director, actor, and educator, People's Artist of the USSR, and one of the founders and the first head of the Moscow Art Theatre. Born in 1863 in Moscow into a merchant family, his passion for theatre manifested in childhood when amateur performances were staged at the Alexeyev estate. In 1888, Stanislavsky became one of the founders of the Society of Art and Literature, where he directed his first productions. A fateful event was his meeting with Vladimir Nemirovich-Danchenko, with whom he founded the Moscow Art Theatre (MKhT) in 1898. The famous symbol of the theatre — a flying white bird — was born during the legendary production of Anton Chekhov's "The Seagull". The MKhT repertoire included plays by Anton Chekhov ("Uncle Vanya", "Three Sisters", "The Cherry Orchard"), Maxim Gorky ("The Lower Depths"), as well as plays by Alexander Ostrovsky and Henrik Ibsen. Konstantin Stanislavsky went down in history as the creator of a unique acting methodology known worldwide as the "Stanislavsky system". He outlined his theoretical research in fundamental works such as "My Life in Art" and "An Actor Prepares". He also paid great attention to musical theatre, organizing the Bolshoi Theatre Opera Studio and the MKhT Opera Studio. The Bakhrushin Theatre Museum's online collection features photographs, archival materials, sketches, and other materials related to the life, work, and teaching legacy of Konstantin Stanislavsky.