In the churchyard on the top of the hill in Kells are found the Round Tower and a number of High Crosses. The round Tower is about 100 feet high, and has five windows at the top, though the original conical cap is missing. The doorway had heads carved on it, but these have almost entirely weathered away. The tower must date from before 1076, for in that year Murchadh Mac Flainn, who was claiming the High Kingship of Ireland, was murdered in the tower. Near the round Tower is the South Cross dedicated to Saints Patrick and Columba, which was possibly erected in the 9th century.