North Sikkim- Indian Switzerland

Gurudongmar Lake, also known as Gurudogmar Lake, is one of the highest lakes in the world, located at an altitude of 17,800 ft (5,430 m) in the north Sikkim of India. It is a lake which is considered sacred by both Buddhists and Sikhs. The lake fed by glaciers is located to the north of the Kanchenjunga range. The lake provides one of the source streams which joins the Tso Lahmu and then form the source of Teesta River. China is 5 km (3.1 mi) to the border on the east. The lake remains completely frozen in the winter months from November to Mid-May.
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.

The Yumthang Valley is a grazing pasture surrounded by the Himalayan Mountains in the North Sikkim district of Sikkim. 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. A tributary of the river Teesta flows past the valley and the town of Lachung.