scenic lake view with historic marinefernmeldeschule schule for strategische aufklaerung in flensburg and boat

water person river outdoors lake travel landscape grass daylight summer tree architecture sky nature sunset dawn recreation city reflection evening wood house building light vehicle countryside bridge leisure watercraft rural historic greenery boat cloudy hill outdoor scenery peaceful tourism marinefernmeldeschule strategische aufklaerung flensburg german navy army war study ostseebad