You may see Patriarchal Cathedral of the Resurrection of Christ from a distance before you actually find this important religious building. Step inside if it's open or just admire the facade from the street.
You'll soon see why this Yoshkar-Ola principal church is a hit with travelers. If you're looking for other things to keep you busy, Sapaev Mari State Opera and Ballet Theatre, Museum of the History of the Gulag, and Yevseyev National Museum are in the area as well. They won't take very long to reach from Patriarchal Cathedral of the Resurrection of Christ.