China has opened a new tourist attraction - a glass skywalk suspended 4,700 feet above sea level on the cliff face of Tianmen Mountain in Zhangjiajie, Hunan Province. The 200-foot long glass bridge allows tourists to walk along the west cliff of the mountain and look through the glass floor to the canyon below. Tourists are required to wear shoe covers to keep the glass path clean as they walk along the dizzying bridge suspended thousands of feet in the air.