The Pingjiang blueprint plan of the Song dynasty for Suzhou City in 1229 is still evident in the layout of the City today. Suzhou City, Jiangsu is over 2,500 years old. It was drawn by Li Shoupeng, engraved in 1229 by Lu Ting and Zhang Yucheng. The map in annotated by numerous titles for bridges, squares, temples, monasteries and other locations. It was re-engraved in 1917 to redefine the lines worn away by countless rubbings of the stele. Pingjiang is the name of the ancient district of modern Suzhou. Marco Polo is reputed to have visited the city fifty years after this plan was created.