This is the third in a series of four volumes that are intended to present a complete Corpus of all the church buildings, of both the Western and the Oriental rites, built, rebuilt or simply in use in the Crusader Kingdom of Jerusalem between the capture of Jerusalem by the First Crusade in 1099 and the loss of Acre in 1291. This volume deals exclusively with Jerusalem, the capital of the Kingdom from 1099 to 1187, leaving the churches of Acre and Tyre to be covered in the fourth and final volume. The Corpus will be an indispensable work of reference to all those concerned with the medieval topography and archaeology of the Holy Land, with the history of the church in the Crusader Kingdom of Jerusalem, with medieval pilgrimage to the Holy Places, and with the art and architecture of the Latin East.