Location: at the north square fountain & around the pavilion
　　Specification: 3m (diam)
　　Price: 400 USD/unit(single-level), 600 USD/unit(double-level), not more than 16 at the north square fountain and 35 around the pavilion
　　Recommendation: North square entrance, the main entrance and the venue of opening ceremony, is the largest outdoor passenger pool. It has an open ladder area which is good for image advertising, where only moveable outdoor billboards and landing balloons will be placed.