Monasterboice is known for its remains of the monastic settlement founded by Saint Buite in the fifth century and is one of the best examples of high crosses in Ireland. The remains consist of an old graveyard, two churches, three sculptured crosses, two early grave slabs and a sundial. 
The South church is the older of the two and it still has the remains of the chancel arch. The smaller church is situated beside the Round Tower and has no trace of a chancel. The Round Tower is about 100ft high. It is now missing its upper part and conical cap.