Home to pretty treasures, San Germán is Mexico's best kept secret. When planning a trip to San Germán, make sure you visit its near-by prime city of Mexico City. Add Mexico City to your vacation plan, it has an interesting bunch of activities to do on your visit like Muse De Templo Mayor, Chapultepec Castle, Zocalo. 1-2 days is an ideal duration of visit to San Germán.