Byzantine architecture developed from 330-1453 AD in the Byzantine Empire with Constantinople as its capital. It had a profound influence on architecture in Europe and the Near East. Key characteristics included the basilica and central plans with domes. The Hagia Sophia, commissioned by Emperor Justinian in the 6th century, was revolutionary with its massive scale and use of pendentives to place a dome on a square base. Byzantine architecture emphasized religious experiences and had styles like mosaics and domes that spread throughout Europe and to Islamic architecture, continuing its legacy into modern times.