castle ruin ulmen with autumn trees

building tree estate ruins property plant village castle monastery house cottage farm grass fortification chapel flower shrub waterway ruin ulmen covered side small town eifel caldera lake called ulmener maar youngest volcanic lakes area old located stretches hill autobahn separates rural vulkaneifel extreme west germany half-timbered medieval architecture tower history historic ancient wall stone fort fortress built craft power autumn trees town eifel ulmen maar medieval heritage street history