China's largest city is a powerhouse of economic development, tipped to become one of the richest regions on earth by 2020. Changing at lightning pace, its glittering skyline, already boasting more skyscrapers than New York, is the construction site for some of the world's tallest buildings. Visitors are attracted by its impressive shopping malls, restaurants, galleries and nightlife, as well as pockets of colonial architecture, classical Chinese gardens, and the traditional temples of old Shanghai.