The number of harbours found, at one time or other, on the southern shore of the city formed one of the most striking features in the aspect of Byzantine Constantinople. This was not due to any natural facilities offered by that shore for the purpose. On the contrary, although the outline of the coast is very irregular, it presents no bay where ships may be moored for the convenience of commerce, or into which they can find refuge from storms. The waves, moreover, cast up great quantities of sand upon the beach. Hence, all the harbours on this side of the city were, to a great measure, artificial extensions of some indentation of the coast, and their construction and maintenance involved great labour and expense. They ranked, in fact, among the principal public works of the capital. But the interests of commerce with the regions around the Sea of Marmora and with the Mediterranean were so great, and the difficulty which vessels coming from those regions often found to make the Golden Horn, owing to the prevalence of north winds, was so serious as to outweigh all drawbacks or impediments, and secured for the accommodation of the shipping frequenting this side of the city no less than five harbours. These harbours were probably constructed in the following chronological order: the Harbour of Eleutherius, known also as the Harbour of Theodosius; the Harbour of the Emperor Julian, known also as the New Harbour, and as the Harbour of Sophia; the Harbour of Kaisarius, the same probably as the Neorion at the Heptascalon; the Harbour of the Bucoleon; and the Kontoscalion. We shall consider them in the order of their position on the shore, proceeding from east to west.
Map of the Shore of Constantinople on the Sea of Marmora Between the Seraglio Lighthouse and Daoud Pasha Kapoussi.
Map of the Shore of Constantinople on the Sea of Marmora Between the Seraglio Lighthouse and Daoud Pasha Kapoussi.