3. Round Tower
                           The round tower is well known and is a National Monument and                            appears in Lennox Burrow's The Round Towers of Ireland. The                            ecclesiastical foundation is listed in Gwynn and Hadcock. They                            record that St. Daig Mac Carell (d.587 Annals of Ulster) was abbot                            and bishop (Acta Santorum Hiberniae). He brought many virgins to                            live under his rule, but later removed them to monasteries of their                            own to the north. Flann O Dachua recorded by the Annals of Ulster,                            was a wise abbot and later bishop, was poisoned in 784. Other                            abbots are recorded up to 930. The site was burned in 789,                            plundered in 948 and burned again in 1166.
 

4. The Motte and Bailey
Known as Inniskeen Motte is recorded in the Monaghan Inventory
as follows: Motte and Bailey, Bawn, Large circular flat topped
mound with fosse visible from SE-W-NE   at base. Traces of broad
oval bailey extending E from Motte. Souterrain reported to exist in
mound. Immediately NE of bailey is a rectangular enclosure with
high stone walls and entrance through large arch. Foundations of
gatehouse visible on inside.