San Shan Bridge by Penda, concept (Beijing, China) – Inspiration for the bridge also came from a double helix and the area's mountainous terrain. When viewed from the side the three arches look like mountains -- 'San Shan' translates to three mountains in English.
San Shan Bridge by Penda, concept (Beijing, China) – A collaborative project between Penda and engineering firm Arup, the bridge features multiple arches and was partly inspired by the famous five-ringed symbol of the Olympic Games.
San Shan Bridge by Penda, concept (Beijing, China) – This curvaceous structure -- a concept bridge by architectural firm Penda -- was designed to connect Beijing's north to the 2022 Winter Olympic games venues in the neighboring Zhangjiakou district.
San Shan Bridge by Penda, concept (Beijing, China) – "It's a very slim structure, a very transparent structure, so from a formal aspect it connects very well to the background but it also stands out in order to create an icon for the Olympic games," says one of the lead architects, Chris Precht.
Zhangjiajie Grand Canyon Glass Bridge by Haim Dotan Achitects – The glass-bottom bridge stretches across two hills and is 300 meters above ground.