ruins of castle wartau towering above the rhine valley in werdenberg in the canton of st. gallen in switzerland

aerial alpine alps alvier architecture attraction bergfried building burg burgruine castle countryside enceinte gallen grass green gretschins helvetic heritage hill historic landmark landscape liechtenstein martinshuegel medieval mittagspitz mountain nature old outdoor panorama republic rhein rhine ruin rural scenic sevelen sky switzerland tourism tower travel tuff valley view vorderrhein wartau werdenberg