THE 30 BEST Things to Do in The Nilgiris District, India (2025) Places to Visit in The Nilgiris District Check out must-see sights and activities: Nilgiri Mountain Railway, Pykara Lake, Walking Tours, Lookouts. Known as the “Blue Mountains,” this magnificent mountain range stretches across Tamil Nadu, Karnataka, and Kerala. In this article, we will delve into the wonders of the Nilgiri Hills, exploring their geographical features, unique biodiversity, cultural significance, and the myriad of experiences they offer visitors. The Nilgiris form part of the Western Ghats, a UNESCO World Heritage Site. The Hills are among the oldest mountain ranges in the world. They had formed over 100 million ... THE 30 BEST Things to Do in The Nilgiris District, India (2025) Places to Visit in The Nilgiris District Check out must-see sights and activities: Nilgiri Mountain Railway, Pykara Lake, Walking Tours, Lookouts. Welcome to Nilgiris, one of the oldest mountain ranges, located at the tri-junction of Tamil Nadu, Kerala and Karnataka. Nilgiris is a part of the Western Ghats.