Invest According to the urban competitiveness index ICUR, BA is the 5th best city in Latin America for doing business. BA has the third largest GDP of any city in Latin America, behind São Paulo and Mexico City. 10 reasons to invest in BA From its strategic location to its extensive purchasing power, this is why you should choose BA. BA in figures Data on BA’s growth. Fastest growing sectors 5 key sectors to invest in. CAI (Investor Attention Centre) A bespoke service to help you do business in BA.