For more than 40 years, Glenmary has operated the Glenmary Group Volunteer Program. Originally located in rural Lewis County, Kentucky, it has offered a retreat-like immersion service experience for high school, college and parish groups. Each group typically works at the program for several days to a week, building and repairing low-income homes, assisting local residents with projects around their property or visiting elderly or remote residents, in an environment of simple living. The Group Volunteer Program is now located in Grainger County, Tennessee, on Joppa Mountain, and is known as "Toppa Joppa."