Debre Libanos has one of the most interesting church museums in Ethiopia. Besides the usual ecclesiastical items there are Italian guns, giant cooking pots, crowns of past emperors and their wives, musical instruments and an old wooden shackle. Fifteen minutes up the hill from the monastery is the cave of Tekla Haimanot (the monastery's founder), where the saint is said to have done all his praying. It’s also the source of Debre Libanos' famed holy water.