Zhaozhou Bridge over Xiao River 洨河【XiáoHé】 in Zhao county 赵县【ZhàoXiàn】, Shijiazhuang, Hebei, dating back to the Sui dynasty 隋代【Suídài】 (581-617) and the world's oldest extant stone arch bridge
Zhaozhou Bridge over Xiao River 洨河【XiáoHé】 in Zhao county 赵县【ZhàoXiàn】, Shijiazhuang, Hebei, dating back to the Sui dynasty 隋代【Suídài】 (581-617) and the world's oldest extant stone arch bridge