The Caroní flows through the city from south to north, dividing it into its predominant halves — the old town of San Félix, to the east, and the newer area of Puerto Ordaz (Spanish pronunciation: [ˈpweɾto oɾˈðas]), to the west.With approximately one million people in the greater metro area, Ciudad Guayana is Venezuela's fastest-growing city[3] with its important iron, steel, aluminum and hydroelectric industries.The towers of the Alta Vista district recall Barranquilla, and many of the residential neighborhoods have architecture and landscaping that are similar to suburbs in the United States from the 1950s through 1980s, such as subdivisions and 'cookie-cutter' homes, neatly-paved sidewalks, and manicured, patterned lawns.The city was founded multiple times in different places, due to the continuous attacks of pirates and conquerors which destroyed it as they went down the Orinoco River in search of El Dorado.The large and extensive program of building highways and avenues, residential areas, schools, hospitals and recreational facilities, continues with the same intensity since its inception, ready to house 2.5 million people in 2020.The country's main electricity producer, Corpoelec, and the regional development office, CVG (Corporación Venezolana de Guayana), are also located in Puerto Ordaz.Two of the most frequently-used piers are Ferrominera (at the mouth of the Caroní river) and Ternium Sidor (recently nationalised into a CVG company, and the only steel works) at mile 197.The latter is currently (as of 2018) the fourth-biggest hydroelectric power station in the world in terms of generation capacity, and gave origin to the Guri reservoir, the second biggest lake in Venezuela.The main universities are: Regional hubs: Puerto Ordaz is headquarters of colleges like: Technical Institutes Inside the city both the Llovizna and Cachamay Parks are located displaying their picturesque waterfalls.