The Red Palace, the highest part of the center, was painted entirely to red to symbolize stateliness and power. It was used for religious study and Buddhist prayer. The interior was composed of a complicated layout with different halls, chapels, and libraries each layer. Besides, it processes an array of smaller galleries and winding passages. Great-West Hall, considered as the largest hall, with beautiful murals painted on its inner walls, takes an area of the 725 sq meters (about 7,804 sq ft). There are three chapels around the Great West Hall, but only the Dharma Cave and the Saint's Chapel remain constructions of the 7th century with the statues of Songtsen Gampo, Princess Wen Cheng, and Princess Bhrikuti inside. As the most crucial part, the Red Palace is the place where you should be during visiting Potala Palace.