Our Emperor, however, having rebuilt the ruinous part of these walls, and strengthened their weak points so as to assist their defenders, devised the following plan also. He stopped up all the passages leading from one tower to another, and arranged one single means of ascent from the ground, within the walls of each, so that the garrison could, if necessary, block up this passage and defy an enemy, even though he had made his way within the wall, since each tower is sufficient within itself for the defence of its garrison. Within these walls he made the most complete provision for safety, both by the buildings which I have mentioned above, and by restoring the most ruinous part of the wall of the city of Selybria.[80] These were the works of the Emperor Justinian at the ‘long walls.’ The well-known city of Heraclea,[81] our neighbour on the sea-coast, which formerly, under the name of Perinthus, was the first city in Europe, and now is second to Constantinople alone, not long ago was reduced to great straits by want of water; not that the country near it was waterless, or that those who built the city in ancient times had neglected to supply it with water—for Europe abounds with fountains, and the ancients took care to make aqueducts—but time, as usual, destroyed the fabric of the aqueduct either through contempt for the age of the building, or encouraged to ruin it by the carelessness of the citizens of Heraclea. This led to Heraclea being left almost without inhabitants; while time produced the same effect upon the palace there, which was a very magnificent building. However, the Emperor Justinian did not neglect this city, but in a truly royal manner furnished it with sweet and transparent waters, and did not allow the palace to lose its ancient reputation, for he restored the whole of it. A day’s journey from Heraclea is a place by the seaside named Rhædestus, conveniently situated for the navigation of the Hellespont, with a good harbour where merchant-ships can moor and discharge their cargoes in quiet water, and when reloaded can again put to sea without difficulty. It is, however, exposed to attacks of barbarians if they should make a sudden incursion into that country, being neither fortified nor placed on difficult ground; for this reason it was neglected by merchants, who disregarded it through fear of this danger. Now, however, the Emperor Justinian has not only rendered the place itself secure, but has also provided for the safety of all those who dwell in the neighbourhood by building a city at Rhædestus, with a strong wall and of very remarkable size, in which, on an invasion of the barbarians, all the people of the neighbourhood can take refuge and save their lives and property.