Byzantine Empire by 
The Byzantine Empire by Byzantine architecture is the architecture of the Byzantine Empire, also known as the Later Roman or Eastern Roman Empire. Byzantine architecture was mostly influenced by Roman and Greek architecture and later Sassanian and Islamic influences to an extent.
Description of the originally Byzantine Hagia Sophia's beautiful dome that seems to be “suspended from heaven by that golden chain” and brilliant structural innovations.
Overview of the Byzantine Empire under its greatest strength under Justinian and then eventual slow decline over the next 900 years.
The Hagia Sophia is an enormous architectural marvel in Istanbul, Turkey, that was originally built as a Christian basilica nearly 1,500 years ago.
