Sri Ranganatha Perumal temple, Namakkal

A Pallava-era rock-cut cave temple dedicated to Narasimha, carved into the flank of the Namakkal fort rock, facing the open-air Anjaneyar shrine.

A living shrine centred on the tall open-air Anjaneyar image facing the separate Narasimhaswamy temple.

A shrine to the goddess Namagiri Amman within the Narasimhaswamy temple precinct in Namakkal. Namagiri Thayar is celebrated as the family deity of mathematician Srinivasa Ramanujan, who credited her with inspiring his mathematical insights.

A hilltop fort built on the towering Namakkal rock, with the rock-cut Pallava-era Narasimhaswamy and Ranganathaswamy cave temples set into its flanks.

A roughly 1,000-year-old Shiva temple built in the Pandya period, one of five temples linked to the Pandava Bhima, who is said to have installed its lingam. It stands on the banks of the Thirumanimutharu, which joins the Cauvery near Velur, and is a rare site where temple, river and cremation ground occur together as at Kasi.

A Murugan hill temple at Mohanur, a small town on the Cauvery river near Namakkal. It is one of the main pilgrimage temples of the Mohanur area.

A medicinal plant farm run by the Tamil Nadu government agency TAMPCOL, growing herbs and shrubs used in Siddha, Ayurveda and Unani medicine. The Kolli Hills have long been renowned for their medicinal flora.

A landscaped garden about 3 km from Semmedu with a rose garden, herbal park, children's park and eco-friendly cottages, along with its own viewpoint. It is one of the main organised attractions on the hills.

A historic fort at Paramathi built by Allala Ilayan of the Vettuva Gounder community, notable as a rare Tamil fort constructed without stone. Inside stands a shrine to the fort's guardian deity, Kotaiyanna Swamy.

An ancient hill shrine to Ettukai Amman, the eight-armed guardian goddess of the Kolli Hills, locally known as Kollipavai. The deity and the hills are referenced in Sangam-era Tamil literature. Pilgrims gather in large numbers on Amavasai (new moon) days.

A popular viewpoint about 2 km from Semmedu, looking out over the forested valleys and ridges of the Eastern Ghats. It is a favoured spot for sunrise and sunset photography.

A boating facility on an artificial lake at Vasalurpatty, ringed by dense greenery and boulder-strewn islets. The lake holds water year-round, making pedal and row boating a popular family activity.