The big temples of Thanjavur and Gangaikondacholapuram, built by Rajaraja and Rajendra, are architectural and sculptural marvels. Chola temples often became the nuclei of settlements which grew around them. These were centres of craft production. Amongst the crafts associated with temples, the making of bronze images was the most distinctive. Chola bronze images are considered amongst the finest in the world. While most images were of deities, sometimes images were made of devotees as well.