bertradaburg or burg muerlenbach, a ruined hill castle at murlenbach, rhineland-palatinate, germany, exterior street partial view

ancient architecture beautiful bertradaburg blue building burg castle city court eifel europe exterior famous forest fort german germany green hill historic historical history house houses kyllvalley landmark landscape medieval mountain muerlenbach murlenbach nature old outdoor palatinate rhineland ruined sky stone street stronghold tourism tower town travel tree valley view vulkaneifel