Thesiege of Colonia del Sacramento was a successful siege in 1704 bySpanish forces of thePortuguese colonial town ofColonia del Sacramento, oppositeBuenos Aires and now in the nation ofUruguay. Four thousand natives and 650 Spaniards, led by the governor of Buenos Aires, DonAlonso Juan de Valdes e Inclán, andBaltasar García Ros, besieged the city beginning late in 1704. One week after a frontal assault failed, in early February 1705, the Portuguese abandoned Colonia del Sacramento.[1]
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34°28′17″S57°50′39″W / 34.4714°S 57.8442°W /-34.4714; -57.8442