Built in the 1st centuries B.C. and A.D. under Dacian rule, these fortresses show an unusual fusion of military and religious architectural techniques and concepts from the classical world and the late European Iron Age.

• 达亚恩城堡，欧洲铁器时代晚期的军事防御建筑，修建于公元前一世纪，用来抵御罗马人的入侵。