城牆難得保留下來，北京本來也可以有這樣環城的城牆公園的，梁思成當時有詳細設計，可惜都拆光了。

來源: yuntai 於 2021-04-30 09:03:48 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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