If you're feeling energetic, a stroll down Marine Drive is possibly the best way to discover Mumbai. This is a windswept promenade, flanked by the sea and a row of art deco buildings. Looped between the concrete jungle of Nariman Point, Mumbai's Manhattan, and the leafy green slopes of Malabar hill, Marine Drive was once called the queen's Necklace, strung with glittering street lights like an enormous strand of imperious jewels. It is also one of Mumbai's busiest roads, an important artery for the heavy suburban traffic heading downtown. Cars whiz continually past the two mile stretch, past huddled lovers, children and babies in perambulators. Like other seafronts, this is where most of south Mumbai comes to breathe in some fresh air.