Byzantine Architecture is a style that emerged in the Eastern Roman Empire, particularly during the reign of Emperor Justinian I in the 6th century. It is characterized by its grand domes, intricate mosaics, and the use of light to create a heavenly atmosphere. The most famous example is the Hagia Sophia in Istanbul, which showcases the innovative use of space and structure. This architectural style often features a combination of Greek and Roman elements, along with a distinct emphasis on verticality. Buildings typically have a central dome supported by arches and columns, creating a sense of unity and harmony. The rich decoration, including colorful mosaics and ornate carvings, reflects the spiritual and cultural significance of the structures.