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