The Upper Mustang Trek explores the mystical “Last Forbidden Kingdom” of Nepal, a remote desert – like region influenced by ancient Tibetan culture. Luxury trekking here focuses on exclusive permits, high – end lodges, and private guided experiences in a restricted region. The highlights of this luxury trek is an ancient walled city of Lo Manthang, unique desert Himalayan landscapes, Tibetan Buddhist monasteries and caves and restricted area cultural preservation experience.