Walking through Thin Places, by Mindie Burgoyne
- Article describe thin places, particularly in Celtic Britain and Ireland where the veil between this world and the other world is thin.
- http://www.thinplaces.net/openingarticle.htm

Thin Place - a pilgrimage through Celtic Holy Ground
- Photographic web site featuring ancient holy sites in Celtic Britain and Ireland.
- http://www.thinplaces.net

Celtic Spirituality in SW Ireland
- Introduction to the many historic and archaeological sights where Celtic - Irish peoples pursued their spiritual life. Bay View House - County Kerry, Ireland.
- http://www.irishvacationhouse.com/Pages/Spirituality.html

The School of Iona.
- Thorough history of the ancient monastery from the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/08090a.htm

Glendalough Monastery
- Photographs of archaeological remains at St. Kevin's 6th century monastery at Glendalough.
- http://home.earthlink.net/~laurieyoung/glendalough.html

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.
- http://www.orthodox-iona.co.uk