Americans have been living the expat life in San Miguel de Allende, Mexico, for more than 50 years. Recently, though, their numbers have increased dramatically; real estate has boomed; some residents seek all the amenities they have at home, but at half the price. Why do Americans choose to live abroad? How do they impact this locale, which was once a sleepy provincial town in the mountains of Mexico? How do the Mexican residents view these 'visitors' from the north? How do the two cultures co-exist, for better and worse?—Anonymous