Alliance Française de Bombay presents a great treasure hunt all over the city, based on photography and the use of social networks (Instagram, Twitter & Pinterest).It is free and open to all.  No registration and no membership to AF is required.
To participate, create a team of 2 to 4 persons. At least one of you need  to have an Instagram or Pinterest account. You can play alone but it’s less fun.
There will be 10 challenges to complete (and a lot of prizes at the end !). On each challenge, you have to capture a photo and post it on Instagram with the hashtag #mumbaiphotohunt