The Hall of 1000 Pillars (in fact only 997) is in the northeast corner, full of carved, bizarre lion-elephants, and the Pandava brothers, the heroes from the Mahabharata from whom the Madurai Pandyas claim descent.
The Hall of 1000 Pillars actually only has 997 pillars.
It's a lovely spot for a picnic, although if the weather is clear you might prefer to take the opportunity to ascend to the very top of the island.