 Of the rest of the land, or 36.3% is settled (buildings or roads) and or 3.5% is unproductive land.Of the built up area, industrial buildings made up 2.7% of the total area while housing and buildings made up 14.2% and transportation infrastructure made up 12.4%.Power and water infrastructure as well as other special developed areas made up 1.8% of the area while parks, green belts and sports fields made up 5.3%.