Inga 3 , Congo , could become the world 's largest hydroelectric dam . Kenya 's Congo is one of many futuristic cities in the pipeline . Egypt 's Grand Renaissance Dam will serve neighboring Konza City and Sudan .
Great Inga Dam , Congo , could become the world 's largest hydroelectric dam . Kenya 's Konza City is one of many futuristic cities in the pipeline . Ethiopia 's Grand Renaissance Dam will serve neighboring Sudan and Egypt .