A new glass skywalk has opened at Tianmen Mountain in Zhangjiajie, Hunan Province, China. The 4,700 foot long skywalk hangs from the cliff face, giving visitors breathtaking views of the area high above the ground. Tourists must wear shoe covers to walk on the glass bridge and keep it clean for others. The skywalk joins two areas of the mountain and has become a popular new tourist attraction, testing the nerves of those brave enough to walk across.