我国现存最为完整的县级古城墙，城墙内部由泥土夯实，外部全部砖砌，城墙上以砖石辅就，上面可以并行两辆马车。 相传为西周大将尹吉甫所筑，明洪武年间，在原旧城基础上扩建成今日的砖石城墙。

China's most complete existing county-level ancient city walls, rammed by the soil within the walls, all the external brick, brick walls on the auxiliary, the above can be two parallel carriage.

youdao