Varadaraja Perumal Temple, Poonamallee

Built in 1653 CE by Rustam, son of the Golconda courtier Astirabad Dhulfiqar, and regarded as the first Indo-Saracenic style mosque in Tamil Nadu. A Persian inscription dated 1653 CE inside the mosque records its founding. It is one of the key heritage monuments of historic Poonamallee.

One of Tamil Nadu's most-visited Amman shrines, dedicated to the goddess Karumariamman and believed to be around 1,000 years old. The locality was historically a dense neem forest, which gave it the name Velkadu or Thiruverkadu. Sundays are the special day of worship and draw very large crowds of devotees.

An ancient Shiva temple at Thiruverkadu, distinct from the adjoining Karumariamman shrine, noted for its set of directional dikpalaka lingams. It is one of the older Shiva temples of the district and part of the Thiruverkadu temple cluster.

An ancient Shiva temple at Vada Thirumullaivayil counted among the 276 Paadal Petra Sthalams, the 22nd in the Thondai Nadu region, and sung in the Tevaram hymns. The presiding deity is Masilamaneeswarar. The temple is regarded as more than a millennium old.

An operational coastal lighthouse in the Ennore-Kattupalli area of Ponneri taluk that guides vessels approaching the nearby Kamarajar (Ennore) and Kattupalli ports. It sits on the district's industrial coastline just south of the Pulicat lagoon.

The 58th of the 108 Divya Desams, dedicated to Vishnu worshipped here as Bhaktavatsala Perumal, the lover of devotees, with his consort known as Ennai Petra Thayar. The temple is attributed to the Pallavas of the late 8th century. It is built in classic Dravidian style with a five-tiered rajagopuram and a granite sanctum.

A Shiva temple in Uthukottai town in the north-western corner of Thiruvallur district, near the Tamil Nadu-Andhra Pradesh border. The presiding deity is worshipped as Papahareswarar, the remover of sins.

A Divya Desam in the heart of Thiruvallur town where Vishnu reclines as Vaidya Veeraraghava, worshipped as a healer of body and mind.

A taluk town on the Chennai-Gummidipoondi suburban line that serves as the road gateway to the Pulicat wetland and the northern coast.

A well-known Murugan temple, dedicated to Balasubramania Swamy, in Siruvapuri village in Ponneri taluk, a popular pilgrimage stop on the northern Chennai belt. It lies close to Periyapalayam and is often visited together with the Bhavani Amman temple there.

A popular goddess temple on the banks of the Arani river at Periyapalayam, roughly 45 km north of Chennai on the highway near Red Hills. The main complex is around 200 years old and is dedicated to Bhavani Amman. During the Tamil months of Aadi and Aavani it draws lakhs of pilgrims.

A Shiva temple at Thirupachur, about 3-4 km from Thiruvallur town on the Thiruvallur-Thiruttani route, counted among the 276 Paadal Petra Sthalams, the 16th in Thondai Nadu. The presiding deity is worshipped as Pasupatheeswarar.