The Bachkovo Monastery (Bulgarian: Bachkovski manastir), archaically the Petritsoni Monastery or Monastery of the Mother of God Petritzonitissa in Bulgaria is an important monument of Christian architecture and one of the largest[citation needed] and oldest[citation needed] Eastern Orthodox monasteries in Europe. It is located on the right bank of the Chepelare River, 189 km from Sofia and 10 km south of Asenovgrad, and is directly subordinate to the Holy Synod of the Bulgarian Orthodox Church. The monastery is known and appreciated for the unique combination of Byzantine, Georgian and Bulgarian culture, united by the common faith