Mall shopping is an all-American pastime that's become part of the national culture. As such, the US is a shopping utopia where you'll find some of the world's best retail destinations, from New York and California to more unexpected hotspots such as Maryland. For outlets bursting with bargains, precincts glittering with glamorous boutiques and indoor entertainment aplenty, here are the top 30 US locations for a mood-boosting trip to the mall.