John Portman & Associates once again impressed on the world stage, winning its third international design competition this year. The Atlanta-based firm unveiled Tuesday its winning design for "Xi Shui Dong Lot A Super Tall Project, Greenland Wuxi 200," in China. The 55-story, 657-foot mixed-use tower and base includes more than 947,000 square feet of built area. The design stacks three cubed elements -- hotel, long-term stay and sky villas. The tower sits atop a four-story mixed-use podium that...