present in modern-day Alexandria, having only slightly diverged from the line of the modern Boulevard de Rosette (now Sharae Fouad). Traces of its pavement and canal have been found near the Rosetta Gate, but remnants of streets and canals were exposed in 1899 by German excavators outside the east fortifications, which lie well within the area of the ancient city. Alexandria consisted originally of little more than the island of Pharos, which was joined to the mainland by a mole and called the ("seven stadia"—a stadium was a Greek unit of length measuring approximately ). The end of this abutted on the land at the head of the present Grand Square, where the "Moon Gate" rose. All that now lies between that point and the modern "Ras al-Tin" quarter is built on the silt which gradually widened and obliterated this mole. The Ras al-Tin quarter represents all that is left of the island of Pharos, the site of the actual lighthouse having been weathered away by the sea. On the east of the mole was the Great Harbour, now an open bay; on the west lay the port of Eunostos, with its inner basin Kibotos, now vastly enlarged to form the modern harbour. In Strabo's time (latter half of the 1st century BC), the principal buildings were as follows, enumerated as they were to be seen from a ship entering the Great Harbour. The Royal Palaces, filling the northeast angle of the town and occupying the promontory of Lochias, which shut in the Great Harbour on the east. Lochias (the modern Pharillon) has almost entirely disappeared into the sea, together with the palaces, the "Private Port," and the island of Antirrhodus. There has been a land subsidence here, as throughout the northeast coast of Africa. The Great Theater, on the modern Hospital Hill near the Ramleh station. This was used by Julius Caesar as a fortress, where he withstood a siege from the city mob after he took Egypt after the battle of Pharsalus. The Poseidon, or Temple of the Sea God, close to the theater The Timonium built by Marc Antony The Emporium (Exchange) The Apostases (Magazines) The Navalia (Docks), lying west of the Timonium, along the seafront as far as the mole Behind the Emporium rose the Great Caesareum, by which stood the two great obelisks, which become known as "Cleopatra's Needles," and were transported to New York