The Suburbs, call’d the _Hepdomum_, stood upon the third Hill, which is now enclosed within the Walls of the City. This is plain from the Situation of the Church of St. _John Baptist_, whom, even at this Time, the _Greeks_ call the Πρόδρομος, or _Fore-runner_ of our Saviour. This Church is seated on the Eastern Side of the City. ’Tis almost entirely demolished by the _Mahometans_, and nothing of it remains but a few Marble Pillars, expecting the last Effort of their Sacrilege. This was a costly and magnificent Building, as appears, among other Tokens, from the _Cistern_ of _Bonus_, which was built by a Nobleman of that Name, and seated a little above it. It was three hundred Paces long; its Roof and Columns are entirely ruined, and its Situation at present is turned into a Garden. _Sozomen_ says, that _Theodosius_ the _Great_ brought over the Head of St. _John Baptist_, from a Village call’d _Coslaus_, near _Pantichium_, in _Chalcedon_, and placed it before _Constantinople_ in the _Hepdomum_, and there built a large and handsome Church to the Honour of God. The same Author attests, that _Theodosius_, when he marched his Army against _Eugenius_, as soon as he came out of the City, offered his Prayers to God, in St. _John Baptist_’s Church, which he had built in the _Hepdomum_. _Procopius_ pays too great a Compliment to _Justinian_, when he reports him to have built this Church in the forementioned Suburbs. _Zonaras_ tells us, that in the Reign of _Constantine_ surnamed _Pogonatus_, the _Hagarens_ besieged the City with a numerous Fleet, which extended itself from the _Promontory_ situated in the _Hepdomum_ Westward, as far as the _Cyclobion_. Other _Historians_ mention the same Thing; namely, that they had their Station from the said _Promontory_, or the _Triclinium_ of _Magnaura_, as far Easterly as the Palace call’d _Cyclobion_. From which Passage I would observe by the By, that _Magnaura_ was a Place in the _Hepdomum_. _Cedrinus_ asserts, that _Philip_ of _Macedon_, built there a round Solar, and placed in the Court of it his own Statue, and built an Armory there. Others write, that _Mauritius_ the Emperor built the _Triclinium_ of _Magnaura_, and that he erected his Statue, and built the Armory there. Over the _Triclinium_ are inscribed these Verses; Upon the _Triclinium_ of _Magnaura_. Heraclius _and his Son_ Constantine, _With Conquest crown’d, and loaden with Success, Under th’ auspicious Influence of the_ Cross, _Built, with surprizing Speed, this beauteous Structure._