Heritage Historically, in the mid-19th century, immigrants poured into Argentina from Spain, Italy, Germany and Eastern Europe. As a consequence, BA’s population grew more than sevenfold from 1869 to 1895. Today it is, astoundingly, home to a third of the country’s population. European influences are visible in many aspects of BA – from the architecture, to the restaurants, to the museums that testify how the city came to be such a melting pot.