Lurvan was the largest continent found on the planet, Krypton. Krypton's three major cities, Argo City, Kandor and Kryptonopolis were all located on Lurvan. Many of the outlying regions of the continent and city-states were devastated during the Last War of 9846. In 9873, the great architect known as Gam-El petitioned the Kryptonian Science Council to rebuild the territory and establish a new Kryptonopolis. Within a year, construction was completed and Kryptonopolis became the planet's new world capital.