Knock is a village in County Mayo, Ireland.
The roundabout at Knock
Knock Basilica
Knock Shrine
Costello is one of the ancient baronies of Ireland. Unusually for an Irish barony, it straddles two counties: County Mayo and County Roscommon. It comprises the modern day districts of Kilkelly, Kilmovee, Killeagh, Kilcolman, and Castlemore.
Barony of Costello highlighted in yellow.