frozen stream tegeler fliess with its heritage-protected haven bridge in berlin, germany

berlin germany heritageprotected trussed arch haven bridge hafenbruecke sechserbruecke tegeler fliess stream steel red blade concrete pedestrian footbridge overpass truss framework pavilionlike tegel frozen winter snow ice ticket booth humboldt island shore trail cold season tree sky road city white park blue snowy frost day heritage-protected february 2021: locals working