Lanka was an idyllic city, created by the celestial architect
Vishwakarma for Kubera, the treasurer of the gods. Kubera had
generously shared all that he owned with Kaikesi's children -his
stepbrothers and sister. However, Ravana demanded Lanka wholly from
him, threatening to take it by force. Vishrava advised Kubera to
give it up to him, as Ravana was now undefeatable.