close-up of a hydrological watch tower by the river

architecture tower dome facade iron building symmetry landmark wall line arch roof skyscraper circle stadium mast art close-up hydrological watch river architectural styles artificial embankment bridges buildings cities facilities color image hydrology horizontal ladder blue building exteriors cascades stairs cloud cloudy dome buildings gardens horizontal line kiosk landscape life-saving equipment lifeguard lighthouse nature no one outdoor photography pier places interest protection rescue river riverbank rivers sand scientific research season seat sky topography tourism industry towers travel vertical composition watching water water temperature waterside waterside area winter