This was once the only access point into the Portuguese fortified town of Colonia del Sacramento. The town was constantly being passed back and forth between Spanish and Portuguese. This is one of the few places where you can see a decent section of the city wall which enclosed the entire site. They were reinforced around 1750 during what is known as the golden era. A cute little drawbridge crossed the small ditch beyond the walls and there is a plaque which mentions the town's world heritage status.
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