Below: the new Westfield Sydney redevelopment. Skybridges are used to connect office and retail buildings.
John Wardle Architects, http://www.johnwardle.com/images/JWA_website_1image_constuction_westfield.jpg
Below: Strelasund Bridge in Germany.
Road Traffice, http://www.roadtraffic-technology.com/projects/secondstrelasund/images/8-strelasund-bridge.jpg
Below: Stonecutters Bridge in Hong Kong.
Wired, http://www.wired.com/images/article/magazine/1702/st_bridge3_f.jpg