You'll probably see Epiphany Cathedral in the skyline before you actually find this important religious building. Step inside if the doors are open or just take in the facade from the street.
You'll soon see why this Kostroma principal church is a hit with travelers. If you're looking for more to explore, Ivan Susanin Monument, Kostroma Ostrovsky State Drama Theatre, and Museum of Wooden Architecture are in this area too. They won't take long to get to from Epiphany Cathedral.