2. Ruins of Sao Miguel das MissoesSao Miguel Das Missoes São Miguel das Missões is a municipality in Rio Grande do Sul state, southern Brazil. Important 17th century Spanish Jesuit mission ruins are located in the municipality. San Miguel Mission is within Sant'Angelo Microregion, and the Riograndense Northwest Mesoregion. The city covers 1,246 square kilometres and had a population of 7,682 resident. From Wikipedia, the free encyclopedia.