Of course, the two Brihadisvara Temples at Thanjavur and Gangaikonda Cholapuram as well as the other two Siva temples, namely the Airavatesvara Temple of Darasuram and the Sarabeswara (Shiva )Temple which is also popular as the Kampahareswarar Temple at Thirubhuvanam, both on the outskirts of Kumbakonam were the royal temples of the Cholas to commemorate their innumerable conquests and subjugation of their rivals from other parts of South India, Deccan Ilangai or Sri Lanka and the Narmada-Mahanadi-Gangetic belts (**). But the Chola emperors underlined their non-partisan approach to religious iconography and faith by treating the presiding deities of their other two peerless creations, namely the Ranganathaswamy Temple dedicated to Lord Vishnu at Srirangam and the Nataraja Temple at Chidambaram which actually is home to the twin deities of Siva and Vishnu (as the reclining Govindarajar) to be their 'Kuladheivams' or tutelary (or family) deities. The Cholas also preferred to call only these two temples which home their tutelary or family deities as Koil or the 'Temple', which denotes the most important places of worship for them, underlining their eq. The above-named temples are being proposed to be included among the UNESCO World Heritage Sites, which will elevate them to the exacting and exalting standards of the Great Living Chola Temples.