reconstructed roman gate of castellum biriciana, unesco site, weissenburg, altmuehl river valley, franconia, bavaria, germany

ages altmuehl altmuehltal altmuhl ancient antiquity attraction bavaria biriciana border buildings castellum city civilization clouds cultural empire entrance europe fortifications foundations franconia frontiers gate german germanic germanic-rhaetian germany heritage historic imperial limes medieval middle moat northern of outdoor outdoors panorama part reconstructed rhaetian river road roman romantic roofs ruins site small state storm summer the thunder tourist tower town travel unesco upper valley wall was weissenburg west western world