Sikkim is a land of vibrantly colored monasteries, adorned with magnificent rhododendrons and orchids. But it is popular as a host to Kanchenjunga, which is the third largest mountain in the world. Surrounded by prayer flags and forested hills, the Khecheopari Lake is a major tourist attraction in Sikkim. Orchid Sanctuaries: Orchid Sanctuary welcomes you with 454 species of orchids. Another, much larger and known orchid sanctuary is the ‘Orchidarium’, alongside Rani Khola. Kanchenjunga National Park: Entry to this magnificent place, including the vast Zemu Glacier, is allowed to mountaineering expeditions and experienced trekking parties, which are using the services of a recognized travel agency. Trekking in Sikkim: Sacred lake Khecheopari provides a walking trek from Pelling, which is one of the major tourist destinations.