Visitors encouraged to walk on crunchy carpet of seeds . Eleventh installment in acclaimed Unilever series . Most famous for co - designing Beijing 's ` ` Bird 's World '' park . Also well - known blogger and outspoken critic of Chinese government .
Visitors encouraged to play on crunchy carpet of seeds . Eleventh commission in acclaimed Unilever Series . Ai famous for co-designing Beijing 's `` Bird 's Nest '' stadium . Also well-known blogger and outspoken critic of Chinese government .