Hey Rupam Although I am unaware of the nearby cities which have access to wheel chairs. I can help you with the places in Chennai which are wheelchair accessible. Click on the link for a community by disability rights organisation Equals, Centre for Promotion of Social Justice. https://www.facebook.com/Accessible-places-in-Chennai-1679375722273854/
Hi Rupam, unfortunately there are not many places around Chennai that are wheelchair accessible. Puducherry is somewhat wheelchair friendly. Some of its attractions like - Shri Aurobindo Ghosh Ashram, Sri Gokilambal Thirukameswar Temple, Le Club and Promenade Beachwalk are wheelchair friendly. Some areas of White Town are car-free which makes it easier to explore on wheelchair. Mahabalipuram has stairs and no ramp making it difficult to visit on wheelchairs.