colorful subway and train line bridge in the background in valley of olaias, lisbon portugal

colorful subway train line bridge background valley olaias lisbon portugal arrábida mountains nature wild herbs olive railway residential urban vale montanha walking trail skyline park houses exterior construction structure transport infrastructure transportation crossing railroad vegetation trees district building grass modern south horizon panorama landscape architecture valley cityscape background bridge train line metro subway colorful lisboa range arrabida olaias areeiro lisbon portuguese portugal europe