The Chapel on the Rock, or Saint Catherine of Siena Chapel, at 10758 State Highway 7 near Rocky Mountain National Park in Allenspark, Colorado on September 28, 2026. The chapel is located on the grounds of the Saint Malo Retreat, Conference, and Spiritual Center of the Catholic Archdiocese of Denver. Pope John Paul II prayed at the chapel during his visit to Denver for World Youth Day in 1993; he blessed the chapel afterwards.