Rathgall Stone Fort

3mi/5km east of Tullow, in Wicklow county, is the ring-fort of Rathgall (National Monument), a hilltop stronghold with three concentric ramparts and ditches, probably built in the early centuries A.D. as the seat of the kings of South Leinster. North of the fort can be seen the well-preserved Haroldstown Dolmen (National Monument), with a double capstone borne on 10 uprights.