Ribat of Monastir
The Ribat of Monastir is the oldest and most prominent Islamic coastal fortress in North Africa. Founded in 796 AD by the Abbasid governor Harthama ibn A'yan, this massive stone citadel served as both a defensive military post against Christian naval raids and a spiritual retreat for warrior-monks known as Murabitun. Modern visitors and night guards report seeing ghostly guardians along the upper battlements, hearing mysterious nighttime footsteps inside the watchtower, and feeling icy sea drafts in dark prayer halls.