In Tolkien's Middle-earth, Armenelos the Golden, translated as The City of the King, was the capital and (in later years) the largest city of Númenor.
It was situated in eastern central Númenor, in the district called Arandor, the Kingsland, close to Meneltarma and the haven of Rómenna.
It was founded as far back as the end of the First Age, when the Edain first migrated to the island. Conceivably Arandor was the first district they settled after landing in a firth that later led to the haven of Rómenna.
Armenelos contained the royal palace, the King's House, reportedly built with the help of the Maiar. Its finishing, together with the coronation of Elros in 32 S.A. marked the beginning of the Númenorean realm.
In Arandor were the haven of Rómenna, the Meneltarma, and Armenelos, the City of the Kings; and it was at all times the most populous region of Númenor.
Armenelos was founded in about 528-30 FiA and was 90 years old when Elros asseded the throne.
Armenelos was the place of feasting and ceremonies and the greatest feast was held there at the marriage of Aldarion and Erendis.