Three Gorges Dam, the world biggest dam might collapse at anytime. Despite huge money spent to build this giant dam, 35% of those money disappeared into bribery and corruption. The steals to hold huge amount of concrete are not strong enough.
Look at the following image. The satellite image in 2018 shows the dam is NOT straight anymore. That means there is a serious structural problems.
Now, they have historical flood around there. Many villages along and inside the Yangtze River have been washed away. The collapse of this world biggest dam is imminent.