A billboard forest

I've never seen such rampart bill-boarding as I have here, and not little ones either, these are HUGE, some are 2 or 3 stories high, and everywhere thoughout the city. The seem to be mainly for sari and jewellry shops, and our CFO reckons they are mainly used as a way for those businesses (or their owners) to launder money, either for themselves or on behalf of others.