This 42-meter-high church was built in the old Gothic style. On December 16, 1243, Pope Innocent IV issued a decree to invite several communities to join a single religious order under the rule and lifestyle of Saint Augustine. For many fires and events but was later restored to the form we see today, it still preserves the relics of San Agustin, Santa Monica, Santa Rita, Santo Tomas de Villanueva and other Augustinian saints.