The Yumthang Valley or Sikkim Valley of Flowers sanctuary, is a nature sanctuary with river, hot springs, yaks and grazing pasture on rolling meadows surrounded by the Himalayan mountains in the North Sikkim district of Sikkim state in India. It is at an elevation of 3,564 metres above msl at a distance of 150 kilometres from the state capital Gangtok. It is popularly known as 'Valley of Flowers' and is home to the Shingba Rhododendron Sanctuary, which has over twenty-four species of the rhododendron, the state flower.

Gurudongmar Lake, is one of the highest lakes in the world and highest lakes in India , located at an altitude of 17,800 ft (5,430 m)in the Indian state of Sikkim. It is a lake which is considered sacred by both Buddhists and Hindus. The lake is named after Guru Padmasambhava, also known as Guru Rinpoche, founder of Tibetan Buddhism who visited the lake in the 8th century.

Lachen is a town in North Sikkim district in the Indian state of Sikkim. It is located at an elevation of 2,750 metres. The name Lachen means "big pass". The town is being promoted as a tourist destination by the Sikkimese government. The town forms the base to the Chopta Valley and Gurudongmar Lake. An annual yak race, the Thangu is held here in summer.