view of the famous theodosian walls of constantinople

age anatolia ancient apse arch archaic archaeology architecture bosporus byzantine byzantium battle battlement castle century christ christian christianity church city civilization constantinople culture defense dome east eastern emperor empire era europe european faith fortress gold golden heritage historic historical history holy huge imperial islam istanbul jesus justinian landmark medieval metropolis metropolitan mosque museum muslim power preserve religion relics remnants renovation restore restoration roman rome ruin ruins sightseeing sultan tower tradition travel turkey unesco venice victory wall walls war