alps Austria austrian dachstein hallstatt hallstatt lake lake landscape mountain mountains panorama panoramic salzkammergut view attersee calm clear hill hills holiday holidays nature red boat relax relaxation sunny upper austria vacation clean ducks green natural rocky silence stones untouched water wood architecture aristocracy blue-blooded building castle gmunden landmark lordly mansion palace ruler stately home traunsee waterside flying mist paraglider blue boats green hills Jetty lakeside landing stage rock rocks sail sailboat sailboats sailing ship shore sky