The extensive plain which lies below ancient Troy towards the Rhaetian promontory was first chosen for his new capital; and though the undertaking was soon relinquished, the stately remains of unfinished walls and towers attracted the notice of all who sailed through the straits of the Hellespont.
"We are at present qualified to view the advantageous position of Constantinople; which appears to have been formed by nature for the centre and capital of a great monarchy.

Situated in the forty-first degree of latitude, the imperial city commanded from her seven hills the opposite shores of Europe and Asia; the climate was healthy and temperate; the soil fertile; the harbour secure and capacious; and the approach on the side of the continent was of small extent and easy defence.

The Bosphorus and the Hellespont may be considered as the two gates of Constantinople, and the prince who possesses those important passages could always shut them against a naval enemy and open them to the fleets of commerce.

The preservation of the eastern provinces may in some degree be ascribed to the policy of Constantine, as the barbarians of the Euxine, who in the preceding age had poured their armaments into the heart of the Mediterranean, soon desisted from the exercise of piracy, and despaired of forcing this insurmountable barrier.

When the gates of the Hellespont and Bosphorus were shut, the capital still enjoyed within their spacious inclosure every production which could supply the wants or gratify the luxury of its numerous inhabitants.