You'll want to browse the collections at Moscow Museum of Modern Art, Gulag History Museum, and Matryoshka Museum. Stanislavski and Nemirovich-Danchenko Moscow Academic Music Theatre, Alexander Goldenweiser's Memorial Flat Museum, and Bolshoi Theatre are notable landmarks to explore if you're in the area. You can watch performances at A.R.T.O. Theater, Praktika Theater, and A.R.T.O. Moscow Theatre if you're interested in local theater.