South of the Golden Horn, on the narrow tongue of land—narrow it seems as seen from the hills of the northern shore—is the city of Constantine and his successors in empire, seated, like the old Rome, on seven hills, and surrounded on three sides by sea, on the fourth by the still splendid, though shattered, mediæval walls. Northwards are the two towns, now linked together, of Pera and Galata, that look back only to the trading settlements of the Middle Ages. The single spot united, as Gibbon puts it, the prospects of beauty, of safety, and of wealth: and in a masterly description that great historian has collected the features which made the position, "formed by Nature for the centre and capital of a great monarchy," attractive to the first colonists, and evident to Constantine as the centre where he could best combine and command the power of the Eastern half of his mighty Empire. Byzantium Before Constantine. It is impossible to approach Constantinople without seeing the beauty and the wonder of its site. Whether you pass rapidly down the Bosphorus, between banks crowned with towers and houses and mosques, that stretch away hither and thither to distant hills.