Clonmacnoise
Clonmacnoise, Clonmacnoise Slide Show, Clonmacnoise, Ireland's Famous Monastic Settl, The Celtic High Cross
Glendalough Monastery
Photographs of archaeological remains at St. Kevin's 6th century monastery at Glendalough.
Pilgrimage to Iona
There are lots of great photos of Iona on this site, as well as information about the island, where to stay, and the annual Orthodox pilgrimage.
The School of Iona.
Thorough history of the ancient monastery from the Catholic Encyclopedia.