You might want to spend some time browsing the exhibits at Novosibirsk State Art Museum, Siberian Military District History Museum, or Nikolay Roerich Museum. First bridge across the Ob, Novosibirsk State Academic Opera and Ballet Theatre, and The 1st bridge across the Ob are notable landmarks to explore if you're in the area. You can catch a show at Novosibirsk Opera and Ballet Theatre, Novosibirsk State Drama Theatre, and Na Levom Beregu City Drama Theater.