You'll want to browse the collections at K. Timiryazev State Biological Museum, Pushkin House Museum on Arbat, and Moscow Museum of Modern Art. Cathedral of the Immaculate Conception, Arbat Street, and Anton Chehov's Theater are monuments to see when you're exploring the area around Moscow Zoo. You can watch performances at Tik Tak Theater, The Man Theater, and Lenkom Theatre if you're interested in local theater.