Sky gardens hold key to Shanghai's future

Multilayered approach will allow people to navigate the city without having to cross busy roads

When designing the Shanghai Tower, the world's secondtallest building, Daniel Winey, head of the design team, said they wanted the skyscraper to be a symbol of China's past, present and future.

So they came up with a building with a dynamic appearance. "It moves, turns and reaches toward heaven and toward the future," said Winey, chief operating officer at Gensler, the US architecture practice that designed the 632-meter structure.