Parāntaka II expanded the Chola Empire by defeating the Pāndyas and Ceylon forces. His son Rājrāj the Great further expanded the empire to include greater parts of South India and Sri Lanka. Rājrāj built the Brihadeshvar Temple in Thanjavur. Rājrāj's son Rājendra helped rule jointly with his father. After becoming king, Rājendra launched military campaigns across South India, Sri Lanka, and Southeast Asia, making the Chola Empire one of the largest Hindu empires. He established a new capital called Gangaikondacholapuram and built another Brihadeshvar Temple there.