The Old City Wall is a historical fortification in Macau, situated to the left of the Ruins of St. Paul’s Church, close to the A-Ma Temple. The wall is constructed using rammed earth, a technique that involves compacting layers of silt, fine gravel, and straw, mixed with oyster shell powder. In addition to sandstone construction, the incorporation of oyster shell powder is a testament to Macau’s identity as a fishing port. The existing wall measures 18.5 meters in length, 5.6 meters in height, and 1.08 meters in width. It features a brick archway, 1.8 meters wide and 2.8 meters high. The Portuguese authorities in Macau have built city walls multiple times, with records dating back to before 1569. The wall is open all year round, operating 24 hours a day, although specific business hours may vary depending on daily conditions. A tip for visitors: for those not particularly interested in Macau’s history or skilled at visualizing historical scenes, this earthen wall might be considered a somewhat dull attraction.
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