At the other side of the cathedral, there was one domed Saint Trinity Church (1750). From the XIXth century the church had three altars of Saint Trinity, Saint Great Barbara and Archistratig Mykhailo. During the WWII the church was ruined. Later it was built again, in 1999; the project was made by Yurii Oliinyk. The same year, on July 4, the new building was sanctified.
In the restored tomb of the Holy Trinity Church, there are burials of rectors of theological seminaries, abbots of monasteries, archbishops, metropolitans and others.