Sri Devanatha Perumal Temple

Temple tradition holds that a number of sages bore witness here to Vishnu in his resplendent, weapon-bearing form (the Sudarshana chakra, the Panchajanya conch and the Kaumodaki mace held aloft) giving the presiding deity his name, Devanatha, "lord of the celestials." The hill on which the temple stands, Oushadhagiri, is itself considered sacred, believed in local tradition to be a fragment of the Sanjeevini medicinal mountain that Hanuman carried from the Himalayas during the Ramayana, some of which is said to have fallen here.

Thiruvahindrapuram's most distinctive claim to fame among devotees today, however, is its Hayagriva shrine. A separate sanctum on the same hillock enshrines Hayagriva, the horse-headed form of Vishnu associated with knowledge and learning, and this shrine is closely tied to the 13th–14th century philosopher-poet Vedanta Desika, who is believed to have received a direct vision of Hayagriva here and composed several of his most celebrated Sanskrit hymns at this site, making Thiruvahindrapuram a place of particular importance to students, scholars and anyone seeking blessings before an exam or a major intellectual undertaking.

Thiruvahindrapuram is traditionally counted among the older Nadu Nadu shrines, with Thirumangai Alvar's eleven pasurams of mangalasasanam forming its earliest literary record. The temple's continued prominence over the following centuries owes a great deal to Vedanta Desika, who is said to have lived and composed extensively at Thiruvahindrapuram, drawing on the Hayagriva shrine's association with learning; several of his Sanskrit stotras are traditionally linked to his time at this hill.

The temple complex grew over subsequent centuries to include the separate Hayagriva sanctum, additional mandapams, and shrines reflecting its dual identity as both a Divya Desam glorified by the Alvars and a major centre of the later Vedanta Desika devotional and scholarly tradition, a combination that distinguishes Thiruvahindrapuram from many of its Nadu Nadu and Chola Nadu neighbours.

The temple stands on the Oushadhagiri hill overlooking the Manimuktha (Garuda) river, under the Sudhdhasatva Vimanam. The complex includes the main Devanatha Perumal sanctum along with the separate hilltop shrine to Hayagriva, and a shrine to the sage Poigai Alvar, one of the earliest Alvars, who is traditionally associated with this site.

The temple observes its own Brahmotsavam along with festivals tied to the Hayagriva tradition, including days of particular significance to students and scholars seeking blessings for education and learning; Vaikunta Ekadashi is also observed with the customary Sri Vaishnava calendar.

Daily worship covers both the main Devanatha Perumal sanctum and the separate hilltop Hayagriva shrine, with many visitors specifically timing their visit to include the climb to the Hayagriva sanctum.