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 G...