He was the first Christian emperor of the Roman Empire; his reign had significant effect on the development of the Roman and later Byzantine world. During his reign the empire was divided into four territories each governed by an imperial partner. He also founded a new capital, named Constantinople, after himself. Constantine though did not ignore the old imperial city and adorned it with many new secular and Christian buildings. The most famous of these is the triumphal Arch, the Arch of Constantine, which still stands near the Colosseum.