Atlas Obscura is a wonderful resource for the forgotten corners of the world. Take look at this entry about the Oratory of the Sacred Heart outside of Dublin, Ireland. The interior is covered with a mural painted over 16 years by Sister Concepta Lynch. It is a beautiful example of Celtic liturgical art.
Pontifex University is an online university offering a Master’s Degree in Sacred Arts. For more information visit the website at www.pontifex.university
Lawrence Klimecki is a deacon for the diocese of Sacramento as well as a working artist, he writes on art and faith at www.DeaconLawrence.org