约2000年前，为了举行角斗、战争剧，以及其它公开演出，罗马圆形大剧场建成了。现在，这个5000座的石头混凝土建筑以另一种方式为罗马服务：充当交通环岛。
(照片来源于《沿着亚壁古道》(1981年6月,国家地理杂志)未发表部分)
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