Ku-yuan, Liu-p’an shan, China (Google Maps ⧉, OpenStreetMap ⧉)
Referenced In
The Travels of Marco Polo
by Marco Polo, da Pisa Rusticiano"and enters Shan-si through what is known among Chinese travellers as the Ku-kwan, Customs’ Barrier."
The Travels of Marco Polo
by Marco Polo, da Pisa Rusticiano"he established his royal residence at K’ia-ch’eng (modern Ku-yuan) in the Liu-p’an shan"