Thirthapurishwarar Temple, Sennivanam

The Kallamedu Formation is a Late Cretaceous (Maastrichtian) rock unit of the Ariyalur Group, laid down in a river (fluvial) setting of siltstones, clays and sandstones. It has yielded dinosaur remains and petrified wood, and the area near Kallamedu village is the reported find-spot of Bruhathkayosaurus, a titanosaur that may have been among the largest land animals ever. The formation is a key terrestrial-dinosaur locality that complements the district's better-known marine fossil beds.

A Chola Shiva temple at Sendurai whose epigraphy places it in the reign of Rajaraja I (985-1014 CE), with about five stone inscriptions and two copper-plate grants attesting its antiquity. It is locally believed to predate the great Thanjavur Brihadeeswarar temple and preserves a Nataraja Sabha within its inner prakaram. The temple anchors Sendurai, one of the four taluk headquarters of Ariyalur district.

A Vishnu temple at Kallankurichi where the presiding deity Kaliyuga Varadaraja Perumal, popularly called Kaliyaperumal, is worshipped. Local tradition holds that the temple was built roughly five centuries ago by a cowherd at the spot of a post believed to hold miraculous powers, though the deity itself is considered far more ancient. It is one of the better-known Vaishnavite shrines of the district and lends its name to the limestone-rich locality around it.

A Vishnu temple in Ariyalur town noted for pillars carved with the ten avatars of Vishnu (Dasavatharam) and a tall gopuram rising about 90 feet.

The district headquarters, formed when Ariyalur split from Perambalur in 2007. Known as the Land of Cements for its limestone quarries and cement industry, it is a convenient base for the region's Chola temples and fossil sites.

A Shiva temple at Sripurandan dated by inscriptions to the period of Kulottunga III (1178-1218 CE). It drew international attention when its roughly 900-year-old bronze Nataraja idol, stolen and smuggled abroad, was purchased by the National Gallery of Australia before the theft was exposed, leading to the idol's repatriation to India in 2014. The recovered bronze is now held at the Government Museum in Kumbakonam rather than returned to the village shrine.

The Kallankurichi limestone belt is where a fossilised dinosaur egg was unearthed in 1992 in the cement-factory mines and later certified by experts, with further clusters of titanosaur eggs identified nearby. The site lends its name to the Kallakurichi Formation, a Maastrichtian (Late Cretaceous) marine unit of the Ariyalur Group rich in ammonites, corals and molluscs. It is one of the district's most significant palaeontology and geology sites for students and researchers.

A historic palayam (zamindari) town, once the seat of the Udayarpalayam Palayakarars whose fort and estate made it a regional power centre. Today it is a taluk headquarters in northern Ariyalur district; the old palace survives as its landmark.

An early Chola Shiva temple at Periyathirukkonam, listed among the district's historically important temples of the Chola period, with its deity worshipped as Adimadyarjunar (Adhimoolanathar). It is a modest but old heritage shrine reflecting the dense Chola temple-building activity across Ariyalur.

A Chola-era Vishnu temple whose presiding deity Veeranarayana Perumal, also called Vedanarayana, is enshrined with his consort Maragadhavalli Thayar. Built in Chola architectural style and attributed to the Chola dynasty, the temple gives the village of Kuruvalapparkovil its name. It is a notable Vaishnavite pilgrimage stop in the northern part of the district.

The main town and gateway to Gangaikonda Cholapuram, named in the Chola tradition (Jayamkonda) and serving as the commercial hub for the northern part of Ariyalur district.

An earthen irrigation dam in Udayarpalayam taluk with a bund about 5 km long and a maximum height of roughly 7 metres, fed as part of the Marudaiyaru basin system. It supplies irrigation to surrounding farmland in a largely agricultural district. The reservoir and its long bund make for a quiet local waterscape.