This is the jeevasamadhi of Sarguru Sri Sivasami Siddhar, also known as Poda Siddhar.
There is place to sit and meditate in this hall. You can go into meditative states here effortlessly.
How to get there:
The temple is located 2.8 kms West of Kanchipuram East train station.
Map: https://goo.gl/maps/jYybr1wydSfRU54a9