You might want to spend some time browsing the exhibits at Novosibirsk State Art Museum, Nikolay Roerich Museum, or Local Studies 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, Krasny Fakel Theater, and Globus Theatre.