Close Advertising Most Expensive Construction Projects Ever Built These are the World’s Most Expensive Construction Projects in History. In this video, we go over the most expensive megaprojects … The Biggest beijing shanghai high-speed railway big dig big dig boston big dig project biggest construction projects building bullet train china channel tunnel channel tunnel construction construction fastest train in the world floating airport kansai airport kansai international airport massive builds megaprojects most expensive construction project in history most expensive construction projects in the world new suez canal suez canal suez canal expansion top luxury 0 views 0 / 0
