As shown in the map below, Celtic High Crosses are found all across Ireland. Locations of crosses for which images exist at the Celtic Art and Cultures Web site are indicated by colored dots:
link to QuickTimeVR
image of cross
link to still image of
cross

Map source: Harbison, Peter. Irish high crosses : with
the figure sculptures explained. Illustrations by Hilary Gilmore. Drogheda
: Boyne Valley Honey Company ; [Syracuse : Distributed by Syracuse University
Press], 1994. (color added)