Orthopedagogisch Centrum (OC) Michiel is a multifunctional regional institution in the Netherlands that serves troubled families and youth at risk. Outdoor programs are used as a treatment modality for adolescents with behavior disorders, drug addictions, or criminal records. Outward Bound was the first experiential outdoor program in the Netherlands, beginning in 1961. Today there are several residential treatment centers using outdoor experiential learning. Although the focus of the programs have changed over the decades, goals generally involve self-discovery and personal growth to stimulate behavior change. Research and program documentation in the Netherlands is often neglected. In the United States, more than 300 organizations run experiential programs. Examples include Outward Bound, Project Adventure, and the National Outdoor Leadership School. Programs in Germany, Switzerland, and Austria are generally based on humanistic psychology. Kurt Hahn is considered the father of outdoor experiential education. Kurt Lewin, a German social psychologist, provided insights into factors related to adventure education. A review of research on outcomes of outdoor programs is noteworthy for the absence of negative results. The staff at OC Michiel is experimenting with experiential outdoor education through activities such as trekking, rock-climbing, caving, and white-water canoeing. Although they see clear progress in the group process and personal growth, there are areas for improvement. (KS)