This book represents the first detailed study of Byzantine churches on the island of Sardinia. The buildings are described and analyzed in detail both individually and as a group. Many of these churches are cruciform in plan and possess a dome. The book includes an analysis of this plan type as used in Early Christian and Byzantine ecclesiastical architecture from the fourth to the sixth centuries, concluding that the Sardinian churches are datable to the early Byzantine period. Numerous architectural drawings and color photographs illustrate the churches.