World's Highest Horizontal Skyscraper at 250 Meters Opens in China. The striking sky bridge sits at 250 meters above ground, boasts a park, and an observation deck with a glass bottom. The entire Raffles City Chongqing project is designed by @safdiearchitects and consists of eight skyscrapers. In a similar fashion to the Marina Bay Sands in Singapore, four of its towers hold up the horizontal skyscraper structure 250 meters above ground (820 ft.), which is called the Crystal. The Crystal measure