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Tumbes, city, northwestern Peru. It is located on the Pacific coastal plain and on high banks overlooking the Tumbes River, 20 miles (30 km) from the Ecuadorian border. In 1532 Francisco Pizarro landed at what is now Puerto Pizarro (the port for Tumbes, 12 miles [19 km] northwest), to begin his conquest of Peru. The town, originally a minor Inca fortress on the road to Quito, Ecuador, did not flourish, however, until after local border...