Chidambaram Temple is one of the 5 holiest Shiva temples. The Chidambaram Natarajar Temple or the Thillai Natarajar temple represents akasha or aether amongst the five natural elements that the 5 Shiva temples represent.
Lord Shiva is present in 3 forms in this temple - As Lingam, in the dancing posture as Natarajar and in the invisible as the Chidambara Ragasiyam (Chidambara Secret).
The Poojas in the temple is performed by the Dheekshitars, who, according to legend have been brought from Mount Kailash.
The temple is located close to Pondichery and is about 4 hours driving distance from Chennai.
You can get additional information and details about Chidambaram Natarajar Temple at the following link.