reconstructed bergfried tower of ruined castle burg zavelstein above teinach valley in black forest.

zavelstein historic rebuilt ruin tower castle ruined germany bergfried medieval 12th century access ancient architecture autumn bad teinach-zavelstein baden-wuerttemberg black forest blue blue sky building burg zavelstein castle ruin europe evening fall flag harvest history landmark landscape material observation observation tower old reconstructed ruined castle shadow sky stone sun sunlight teinach teinach valley tourism tourist travel tree view tower wall