Top 10 Civil Engineering Wonders Civil engineering projects yet dominate headlines across the world. From the world’s tallest building to the biggest manmade islands, people everywhere are dependent upon civil engineering innovations. Let’s see some of the most amazing civil engineering wonders and construction projects throughout time. Three Gorges Dam (2003) The world’s largest dam and also the largest hydroelectric power plant, has a height of 185 m. The hydroelectric plant is built inside and produces a total of 4.7 billion kWh each year. During construction, 27.2 million cubic metres of concrete were used. Jeddah Tower (Currently under Construction) Earlier known as the Kingdom tower, construction began on this building in spring 2013. When completed, the Jeddah Tower is estimated to cost 1.2 billion US dollars and top the charts as the world’s tallest building. Carlsbad Desalination Plant (Presently under Construction) In southern California, fresh drinking water is hard to come by. The Carlsbad Plant aims to take the salt out of 50 million gallons per day and supply San Diego County residents with drinking water. Danyang-Kunshan Grand Bridge (2010) This 102.4 mile bridge holds the title of world’s longest bridge yet, and it took 4 years to construct. Unlike most bridges, it is built on a viaduct design, spanning many valleys and connecting the cities of Shanghai and Nanjing in the Jiangsu province of China.