Upper Mustang is a remote region in the northern part of Nepal, known for its unique Tibetan culture and stunning landscapes. It lies in the Mustang District and is often referred to as the "Last Forbidden Kingdom" due to its historical isolation. The area features dramatic cliffs, ancient caves, and traditional villages, making it a popular destination for trekkers and adventurers. The region is home to the Lo Manthang valley, which serves as the capital of Upper Mustang. Visitors can explore ancient monasteries, such as Thubchen Monastery, and experience the rich traditions of the local people. The best time to visit is during the spring and autumn months when the weather is mild and the scenery is breathtaking.