The oldest extant paintings in Korea can be traced back to the Three Kingdoms Period (57 B.C. - A.D. 668). The mural paintings of the Goguryeo Kingdom (37 B.C. - A.D. 668) are highly valued for providing a detailed picture of the lifestyles of nobles during that time, as well as patterns and decorations considered auspicious. UNESCO added the capital cities and tombs of the ancient Goguryeo Kingdom located between (North) Korea and present day China in its list of World Heritage Sites in 2004.