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The inner face of the walls before the Porta San Giovanni
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The inner face of the walls before the Porta San Giovanni
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The walls as they reach the Porta San Giovanni
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The Porta San Giovanni (right) and the Porta Asinaria
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The Porta San Giovanni, inside
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The Porta Asinaria, outside
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The Porta Asinaria, outside
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The Porta Asinaria, inside
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Model of the Porta Asinaria
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The Porta Metronia, outside
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The Porta Metronia, inside
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The Porta Metronia, inside
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The Porta Latina, outside
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The Porta Latina, outside
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The Porta Latina, inside
These walls were begun by the emperor Aurelian (r 270-275), doubled in height by Maxentius (r 306-312), and restored by Honorius in 403. With 18 gates and 381 towers, they remained Rome's principal defence until 1870. These pictures were taken during a cycle ride round the 18-km circuit of the walls in April 2009.
