No doubt the royal residences and other buildings at Tara were of wicker construction. Furthest to the south, on the ridge or hill of Tara, is the Rath Laoghaire (Leary), built by an old king whom St. Patrick tried to convert, but without success; and somewhere in the rampart on the southern side of this are the bones of Laoghaire. He was buried as he ordered--in the bank of his rath, standing erect, with his shield and weapons, with his face turned southward toward his foes, the Lagenians (Leinstermen). Next northward is Rath na Riogh (Rath of the Kings), probably the oldest structure at Tara, and the royal residence. It is oval, and 853 feet long from north to south. Within its inclosure are: Teach Cormaic (Cormac's House), a rath with an outer ring, probably built by Cormac Mac Art. Its diameter is about one hundred and forty feet. Next to the northwest, and joined to Teach Cormaic by a common parapet, is the Forradh ("place of meeting"). Its greatest diameter being 296 feet and the diameter of the inner circle 88 feet. To the north of these, but still within the Rath na Riogh, is a mound called Dumha na n-Giall (Mound of the Hostages), on the flat summit of which was probably a house wherein dwelt the hostages often required by the ard-ri of minor kings, of whose fealty he might have doubts. No doubt the hostages of Niall of the Nine Hostages were kept here. To the west of this mound are the remains of another, the Dumha na Bo, or Mound of the Cow. Outside the inclosure of the Rath na Riogh, on the north, is Rath na Seanaidh, or Rath of the Synods, so called because of the synods held there by St. Patrick and his successors, though it is of much older date.