It is situated near the banks of the river Kollidam (Coleroon). This picturesque town has a beautiful and spotlessly clean Shiva temple. Brahmapureeshwarar (Shiva)- Thirunilainaayaki (Parvathi) are the main deities. On the banks of this temple's tank was where "Thirugyanasambandhar", one of the great Saivite saints, as an infant was fed the milk of wisdom by Goddess Parvathi herself. The temple's cleanliness is noteworthy. The temple is maintained spotlessly clean sadly, in stark contrast with other temples in India. Yet another famous temple town of Vaitheeswaran Koil, famous for its Shiva temple as well and its "Nadi Jyosiyam", a unique way of astrology is situated less than 5 kms from Sirkazhi.
Here is the link to temple route map for the travellers visiting Navagraha temples in Tamilnadu. 
Poompukar Beach Kalai koodam In Poompukar Trancebaur Fort Navagraha Temples
Vaitheeswarankoil is in just 6 K.Miters towards southwest.
You can buy Artistic works of poombuhar those made of kilinchal, and sea items.
You can eat south indian vegetarian cuisine, including puliyotharai, pongal in Mangala Vilas Hotel or your non vegetarian cuisine in Katta Mudaliar or in Murugan Kadai Parotta or Ayarpadi Mess.
Dont miss the Thunder which is available near to Peria kovil
Dont miss to drink the sirkazhi water its very sweet.