In 1993, Sr. Joanne Schuster built a Peace Wall on the property of the mansion at Mercy-Mt. Airy Hospital site as part of the Holistic Health Center. The Peace Wall was to provide a space for people who wished to take some time to pray for peace. The wall has the word "peace" in Chinese, Navajo, Arabic, Russian, French, Latin, Portuguese, English, German and Hebrew to express unity of all people.
The background on the wall depicts earth, water, sun, moon, stars and a whale to reflect all of creation. The center has a large dove in a circle to represent peace. It was moved to the grounds of St. Clare in the fall of 2010.