Here are a few of the many thousands of retreat centers throughout the world. This list is organized by location and self-stated affiliation, however most retreat centers do not require that you endorse their affiliation to experience their facilities. We cannot endorse any of these centers, having been to very few of them ourselves. If you know of a retreat center you'd like to see listed, please contact us.
Numerous locales
Buddhism: Foundation for the Preservation of the Mahayana Tradition
Arizona
Non-denominational: Angel Valley Spiritual Retreat Center
Christian: Sisters of St. Benedict, Our Lady of Guadalupe Monastery
California
Non-denominational: Esalen Institute
Non-denominational: Harbin Hot Springs
Non-denominational: Stillheart
Zen Buddhism: Zen Center of Los Angeles
Zen Buddhism: San Francisco Zen Center
Christian: Leoni Meadows Christian Retreat Center
Yoga: Ananda's Yoga and Meditation Retreat Center
Yoga: Mount Madonna Center
Colorado
Christian: Covenant Heights Conference Center
Christian: Voice of Wilderness
Non-denominational: Shoshoni Yoga Retreat
Connecticut
Non-denominational: Mercy Center Conference Retreat Center
Non-denominational: Wisdom House Retreat and Conference Center
Non-denominational: Trinity Conference Center
Florida
Non-denominational: Orange Springs Retreat
Georgia
Christian: Simpsonwood Conference and Retreat Center
Non-denominational: Delphi Center
Yoga: Center for Spiritual Awareness
Illinois
Christian: Dickson Valley Camp and Retreat Center
Christian: Lake Williamson Christian Center
Christian: Cenacle Retreat House and Spirituality Center
Indiana
Christian: Benedict Inn Retreat and Conference Center
Roman Catholic: Fatima Retreat House
Iowa
Christian: Village Creek Bible Camp and Retreat Center
Kansas
Non-denominational: Gaea Retreat Center
Massachusetts
Non-denominational: Earthdance
Workshop Retreat Center
Minnesota
Christian: ARC Retreat Center
Christian: Timber Bay Camp and Retreat Center
New Hampshire
Christian: Geneva Point Center
New Mexico
Social Activists: The Vallecitos Mountain Refuge
New York
Sufi Community: Abode of the Message
North Carolina
Christian/Catholic: St. Francis Springs Prayer Center
Non-denominational: Sanctuary in the Pines
Non-denominational: WriteMind Institute for Corporate Contemplation
Oregon
Non-denominational: Oregon House Healing and Retreat Center
Christian: Cannon Beach Christian Conference Center
Scandinavian: Anderson Lodge
Pennsylvania
Non-denominational: Kirkridge Retreat Center
Texas
Non-denominational: T Bar M Retreat and Conference Center
Jewish: Camp Young Judaea Retreat and Conference Center
Virginia
Creative Arts: Virginia Center for the Creative Arts
Catholic Ecumenical: The Well Retreat Center
Wisconsin
Non-denominational: Namaste Retreat Center of Wisconsin