Inside the Potala Palace, the walls of all the palaces, halls and corridors are covered with murals and surrounded by various relievos. Most murals and sculptures are very colorful and have great historical and artistic value, with the topics of the plateau scenery, historical legends, Buddhist stories, construction scene, etc. There are large collections of cultural relics and treasures, including nearly 10,000 various types of thangkas (Buddhist scroll paintings), and tens of thousands of Buddha statues made of gold, silver, jade, wood, and clay. Besides, there are the stupa towers of the successive Dalai Lama in the past dynasties, the decrees for pardon, jade seals issued by Ming and Qing emperors, gifts, plaques, scrolls of Buddhist sutras, crafts, etc. Among all the treasures, the stupas that keep the corpses of successive Dalai Lama are the most precious.