Sri Parimala Ranganatha Perumal Temple

The place-name Thiruindalur is traditionally derived from "Indu," a name for the moon, tying the site to the same Chandra (moon-deity) legend associated with several neighbouring Divya Desams. Perumal here shares the name Ranganatha with the presiding deity of Srirangam, and the temple is counted among the Pancharanga Kshetrams (five sacred Ranganatha shrines strung along the Kaveri) where it holds the specific standing of Antya Arangam, "the last Ranga," downstream of Srirangapatna (Adi Ranga) and Srirangam (Madhya Ranga).

Thirumangai Alvar sang ten pasurams in praise of Parimala Ranganatha here, and temple tradition preserves a striking legend behind them: arriving to find the temple doors locked, the Alvar is said to have sung verse after verse of praise outside, growing frustrated when the doors remained shut, until in his final pasuram he told Parimala Ranganathar to keep the temple to himself, at which point, tradition holds, the doors finally opened.

Temple tradition holds that Chandra, the moon deity, was relieved of a curse and worshipped Vishnu at this location, which is accordingly named for him, the temple's tank, Indu (Chandra) Pushkarini, preserves this same association.

As the Antya Arangam of the Pancharanga Kshetrams, Thiruindalur's place in Vaishnava geography has always been defined relative to Srirangam: pilgrims following the Kaveri downstream from Srirangapatna through Srirangam traditionally regard this temple as completing that sequence, giving it a devotional significance larger than its modest size might suggest.

The sanctum here is built under a distinctive rectangular tower known as Vedachakra Vimanam, an uncommon shape among the Chola Nadu Divya Desams. The temple tank, Indu Pushkarini, lies by the Kaveri, consistent with the temple's place among the river's Pancharanga shrines.

The temple's calendar follows the broader pattern of Kaveri-belt Ranganatha shrines, with Vaikunta Ekadashi during Margazhi (December–January) as a shared regional observance alongside its own periodic Brahmotsavam.

Daily worship follows the customary schedule of the Mayiladuthurai-belt Divya Desams.