You might want to spend some time browsing the exhibits at Glinka National Museum Consortium of Musical Culture, Gulag History Museum, or Central Armed Forces Museum. VTB Arena, Lenkom Theatre, and Central Academic Theatre of the Russian Army are monuments to see when you're exploring the area around Megasport Arena. You can watch performances at Tik Tak Theater, Tchaikovsky Concert Hall, and Sphere Moscow Drama Theater if you're interested in local theater.