The most important historical church in Iran is the old cathedral, commonly referred to as the Vank (which means "cathedral" in the Armenian language). This large building was constructed during the reign of Shah Abbas the First and completely reflects Iranian architecture. It has a double-layer brick dome that is very much similar to those built by the Safavids. The interior of the church is decorated with glorious and beautiful paintings and miniature works that represent biblical traditions and the image of angels and apostles, all of which have been executed in a mixture of Iranian and Italian styles. The ceiling and walls are coated with tiles from the Safavid epoch.At a corner of the large courtyard of the cathedral, offices and halls have been built to accommodate guests, the Esfahan archbishop and his retinue, as well as other important Armenian religious hierarchy in Iran. The church compound also includes a museum that is located in a separate building. The museum displays preserved historical records and relics, and the edicts of Iranian kings dating back to the time of Shah Abbas the First. It also contains an interesting collection of art work.Esfahan has other historical churches, the most important of which is the Church of Beit-ol Lahm (Bethlehem) at Nazar Avenue. There are also the Saint Mary church at Jolfa Square and the Yerevan church in the Yerevan area.