Isildur and Anárion found the southern realm of Gondor
Event Type: Political
Age: Akallabêth/Last Alliance
Isildur and Anárion were borne away southwards, and at the last they brought their ships up the Great River Anduin, that flows out of Rhovanion into the western sea in the Bay of Belfalas; and they established a realm in those lands that were after called Gondor.... Long before in the days of their power the mariners of Númenor had established a haven and strong places about the mouths of Anduin, in despite of Sauron in the Black Land that lay nigh upon the east. In the later days to this haven came only the Faithful of Númenor, and many therefore of the folk of the coastlands in that region were in whole or in part akin to the Elf-friends and the people of Elendil, and they welcomed his sons. The chief city of this southern realm was Osgiliath, through the midst of which the Great River flowed; and the Númenóreans built there a great bridge, upon which there were towers and houses of stone wonderful to behold, and tall ships came up out of the sea to the quays of the city. Other strong places they built also upon either hand: Minas Ithil, the Tower of the Rising Moon, eastward upon a shoulder of the Mountains of Shadow as a threat to Mordor; and to the westward Minas Anor, the Tower of the Setting Sun, at the feet of Mount Mindolluin, as a shield against the wild men of the dales. In Minas Ithil was the house of Isildur, and in Minas Anor the house of Anárion, but they shared the realm between them and their thrones were set side by side in the Great Hall of Osgiliath. These were the chief dwellings of the Númenóreans in Gondor, but other works marvellous and strong they built in the land in the days of their power, at the Argonath, and at Aglarond, and at Erech; and in the circle of Angrenost, which Men called Isengard, they made the Pinnacle of Orthanc of unbreakable stone.
The Silmarillion, Of the Rings of Power and the Third Age
Elena Tiriel 1Dec07