趙州橋 [ㄓㄠˋ ㄓㄡ ㄑㄧㄠˊ; zhao4 zhou1 qiao2]
Zhaozhou Bridge over Xiao River 洨河[ㄒㄧㄠˊ ㄏㄜˊ; xiao2 he2] in Zhao county 趙縣[ㄓㄠˋ ㄒㄧㄢˋ; zhao4 xian4], Shijiazhuang, Hebei, dating back to the Sui dynasty 隋代[ㄙㄨㄟˊ ㄉㄞˋ; sui2 dai4] (581-617) and the world's oldest extant stone arch bridge
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