Tamil Nadu is well renowned for its temple towns and heritage sites, hill stations, waterfalls, national parks, local cuisine and the natural environment and wildlife. Marina beach in Chennai is the second longest beach in the world and Chennai is home to numerous historic temples and parks. Chennai is also nicknamed as the Gateway of South India. The state has three UNESCO World Heritage Sites which include the Great Living Chola Temples and Mahabalipuram. The Western Ghats is one of the eight hottest biodiversity hotspots in the world and a UNESCO World Heritage Site.