The Potala Palace is a UNESCO heritage site that is definitely a must-see while you are in Tibet. Situated at a height of 3,700 meters on the Red Mountain, since the 7th century it has been the winter palace of the Dalai Lama. It plays a major role in Tibetan Buddhist religious practices and is also a major administrative place in Tibet. The Potala Palace actually consists of two palaces - the Red Palace and the White Palace. Both the palaces, like the Norbulingka (summer palace), are architectural marvels. The buildings are not only beautiful, they stand tall in perfect harmony with the natural beauty of the surroundings.