Ooty also known as Udagamandalam is the "Queen of hill stations" and the capital of Nilgiris district. It is one of the most popular tourist resorts in India. Nilgiris means "Blue Mountains". It is a land of picturesque picnic spots. Used to be popular summer and weekend getaway for the Britishers during the colonial days. It is situated at an altitude of 2,240 meters above sea level. An added attraction for the tourists to Udagamandalam is the mountain train journey on a ratchet and pinion track which commences from Kallar, near Mettupalayam and wends its way through many hair-raising curves and fearful tunnels and chugs along beside deep ravines full of verdant vegetation, gurgling streams and tea gardens. One can notice a marvellous change in vegetation, as one goes from Kallar to Coonoor. The establishment of numerous tea estates made Ooty famous. Lofty mountains, dense forest, sprawling grasslands and miles and miles of tea gardens greet the passengers on most routes. The annual Tea and Tourism Festival attracts crowds in huge numbers.

The Nilgiri Hills were part of Hoysala empire under king Vishnuvardhana in the 12th century. It then became part of the Mysore of Tipu Sultan who later surrendered it to the British in the 18th century. John Sullivan, the British governor of neighboring Coimbatore province, liked the climate of this forested land, and occupied it by taking land from the native tribes (Toda, Irumba and Badaga); often buying up many square kilometres in a day for the price of a few meals.

The hills were developed rapidly under the British Raj because they were almost entirely owned by private British citizens, unlike the rest of India. Ooty served as the summer capital of the Madras Presidency, and had winding hill roads and a complicated rack railway system built by influential and enterprising British citizens with venture capital from the Madras government.

It is believed the Blue Mountains appears so because of the vast Nilgiri forest surrounding them.