This book deals with the liturgical environment of the Orthodox Church, focusing on (1) the church building, including aspects of its iconostasis and iconography, and (2) liturgical vestments. I will mainly approach these two issues from a historical perspective and follow, especially in the exposition of the development of the church building, a timeline similar to the one followed in my previous books on Orthodoxy, that is from its Jewish background to the end of the Byzantine Empire and beyond.