The largest dam in the world is The Three Gorges Dam in Hubei Provence, China. It covers more than a mile and stands 50 stories high and holds back more than five trillion gallons of water. It’s the largest hydroelectric dam in the world but came at cost to people and Chinese historical sites.

 The making of the dam flooded towns, farmland and historical sites, having to relocate 1.13 million people from their homes. The idea of the dam was not only to generate electricity. It was also to help flooding of the Yangtze River, which is known for extreme flooding. Before the dam was built, 4,000 people lost their lives due to flooding of the river.