thousand years of artistic development is almost entirely omitted from the telelesson or from the telecourse art of the western world. for this reason, i have brought you here to the holy trinity church. we are very fortunate here in san francisco to have such a lovely monument which reflects the byzantine art tradition. the decorative program which you will see, the lovely images that you will see in this church, belonged to the middle byzantine phase. i need to clarify, the byzantine period is divided into three periods: the early, middle and the later phase. and it's the middle phase lasting from about the 10th century all the way up and into the 12th century a.d., the style of which is reflected in the interior and the decorative program of the church. i, maria cheremeteff, from city college of san francisco art department, welcome you here to this church. and i would like to invite you to a tour to step with me from this narthex, which is the entrance to the church, and then walk with me through the nave and then up and toward the sanctuary barrier which is the icon or image screen divi