Greek Catholic Co-cathedral of Saints Cyril and Methodius is the historicistic church of Eparchy of Križevci that belongs to the Vicariate of Diocese of Žumberak-Križevci. It is located in the Street of St. Cyril and Methodius on the Upper Town in Zagreb, near St. Mark's Square.HistoryGreek Catholic church and seminary existed on the Upper Town before the 17th century. This Church was intended for the Greek Catholic believers, mostly people from Žumberak Mountains, Uskoks and clerics that lived in and around Zagreb. It is not possible to determine when was this Church built because a fire that broke out in 1766 destroyed most of the Church's books that would give a precise date.The current church dedicated to St. Cyril and Methodius was built in 1886 during the reign of Bishop Ilija Hranilović on the site of the former church of St. Basil. The parish uses the facilities of the Greek Catholic seminary that is connected to the Church which gives room that serves as a parish office, and, since 1932, a hall with sacristy.The present churchCo-Cathedral was designed by Hermann Bollé. It is built in the neo-Byzantine style of historicism. Co-Cathedral owns a rich collection of paintings by Ivan Tišov, as well as icons by E.A. Bučevski and professor Nikola Mašić. There are three bells in the 50m high Co-Cathedral's belfry. Largest ball weights 782 kg and is dedicated to St. Cyril and Methodius, medium bell that weight 395 kg is dedicated to the Mother of God and small bell that weights 230 kg and is dedicated to Basil of Ostrog. Co-Cathedral owns a precious cross for tetrapod, reliquary, and two capes, as well as set of kit icon mounted on wood for the cross.