Byzantine churches are religious buildings that were constructed during the Byzantine Empire, which lasted from the 4th to the 15th century. These churches are known for their distinctive architectural features, including large domes, intricate mosaics, and ornate decorations. The use of light and space in their design creates a unique atmosphere that enhances the spiritual experience. One of the most famous examples of Byzantine architecture is the Hagia Sophia in Istanbul, originally built as a cathedral. Byzantine churches often served as centers of worship and community life, reflecting the rich cultural and religious heritage of the Eastern Orthodox Church.