Distinctive features of Tigray are its rock-hewn churches. Similar in design to those of Lalibella, but many are considered to be older- perhaps  dating from the sixth century. Designs are partly inspired by classical architecture, they are often located at the top of cliffs or steep hills, for security.  For the adventurous -  Tigray’s ancient Debre Damo monastery is accessible by climbing a rope 25 meters up a sheer cliff.