The Chola Empire, though not as strong as between 850 and 1150, was still largely territorially intact under Rajaraja Chola II (1146–1175) a fact attested by the construction and completion of the third grand Chola architectural marvel, the chariot-shaped Airavatesvara Temple at Dharasuram on the outskirts of modern Kumbakonam. Chola administration and territorial integrity until the rule of Kulothunga Chola III was stable and very prosperous up to 1215, but during his rule itself, the decline of the Chola power started following his defeat by Maravarman Sundara Pandiyan II in 1215–16. Subsequently, the Cholas also lost control of the island of Lanka and were driven out by the revival of Sinhala power.[citation needed]