You might want to spend some time browsing the exhibits at V.V. Barsova Dacha Museum, Sochi Maritime Terminal, or Nikolai Ostrovsky Literature Memorial Museum. Stalin's Villa, Museum of Sochi Sport Honour, and N. Ostrovskiy Literary Memorial Museum are well-known local landmarks worth a visit. You can watch performances at Winter Theatre, Summer Theater, and Festival Concert Hall if you're interested in local theater.