With less than four months to go before the start of the 2014 Winter Olympics in the Black Sea resort of Sochi, the city is struggling to complete its multi-billion-dollar makeover into a winter sports hub, with massive construction projects still under way. At the same time, organizations in Russia and abroad are raising concerns about the treatment of migrant workers at the Olympic sites, while others are calling for a boycott of the games in response to Russia's repressive antigay legislation. Here is a look at a city in the midst of a transformation.