Surya @ Cauvery delta

An inscription in the temple states, it was built in the reign of Kulottunga Chozha Deva, between 1060 & 1118 CE. 

Inscription mentions the temple as, Kulottunga Martanda Alaya.

Muthuswami Dikshatar mentions the temple, in his composition 'Surya murtey', tuned in Saurashtram ragam.

- Wikipedia 

Saturn @ the darbha marsh

Null-aru -  midst-river streams.

Sited in the marshland of darbha reeds, between the streams of  Vanchi-aru in the north and Arasil-aru in the south, is the shrine of Shiva, as Lord of the Darbha marsh.

Sambandar's verse, on the Lord enshrined @ this marshland, was scripted on a palm leaf. It remained green, untouched by flames.

Flames consumed palm leaf verses, penned by a group of jains, who had challenged Sambanda.

- Wikipedia 

Earth shrine @ Aar-ur

Shiva as Nata-raja, is persona for Space.

Shiva as Thyaga-raja, is persona for Earth.

Thyagaraja at Aar-ur is also called Putridam-kondar - one who resides at a termite mound.

- as held in tradition

Mars @ Shrine of the healer

Subrahmanya overcame demon Soorapadman, in battle. And Devasena, his divine army sustained severe injuries. 

Shiva manifested as a Waidya, and addressed the situation. Shiva's consort here, is Taiyal Nayaki - dispenser of medicinal oils. 

Pull - Irukku - Vel - Ur is associated with a bird, Rg. veda, and the spear of energy that Subrahmanya received from Dewi.  

This Ur is also famous for palm leaf astrology, or Naadi Jyotish. 

- Wikipedia 

Kshetra for Venus - Sri Rangam

Shukra, son of Bhrgu divided himself into two.

One part became a fount of knowledge for gods; other became a knowledge source for demons. 

Blessed with Mrta Sanjivni Vidya, he restored to life, many demons who died in battle. 

Gods wanted this knowledge.

And gained it, in due course of time.

- Wikipedia 

Jupiter @ Chendur

Naradadhi Devayogi Brunda hrud niketanam 

Barhivaryavaham Indu Shekareshta Nandanam

Bhaktaloka roga dukha papa sangha banjanam 

Bhavayami Sindhu theera vasinam Shadananam 

- Adi Sancara 

Mercury @ Madurai

Shiva as Soma-Sundara, personifies planet Mercury, in Meenakshi's Madurai.

- as held in tradition