Beijing (scroll down for more) This city remains full of possibilities. With double-digit GDP growth and an investment of $40.9bn in the Beijing Olympics, there is an addictive energy here. New landmarks worthy of a standing ovation include Herzog & de Meurons Beijing National Stadium, Arups Water Cube Aquatic Centre, Steven Holls Linked Hybrid mixed-use development and David Chipperfields residences in Ninetree Village.