Satyanarayana Perumal Nanganallur and Rajarajeswari Temples are together and connected. Actually the Rajarajeswari temple is older. The entrance to the perumal temple is from the west and the main entrance for the Rajarajeswari Temple is from the north. The specialty of the perumal temple is the Navagrahas which are not normally seen in perumal temples, that too installed north facing in a line on the sanctum sanctorum. The Rajarajeswari temple has 16 steps leading to the goddess shrine which are metal plated. As one climbs the steps on each side are installed 16 Dwaradevatas representing the phases of the waxing and waning moon. They are for waxing phase in the order of ascending steps – Dwaradevata, Kameswaridevi, Bagamalinidevi, Nityaklinnadevi, Paerundadevi, Vanhivasinidevi, Mahavajreswaridevi, Sivadhoodhidevi, Dwaritadevi, Kulasundaridevi, Nithyadevi, Neelabadagadevi, Vijayadevi, Sarvamangaladevi, Jwalamalinidevi, Chitradevi. And in reverse order for waning phase in the order of descending steps.