Australia
Blue Mountains Insight Meditation Centre
Medlow Bath, New South Wales (two hours west of Sydney)
Calendar highlights: annual one-month retreats with visiting teachers including Sayadaw U Vivekananda, Ariya Baumann and Patrick Kearney
Number of meditators: 20
New Zealand
Te Moata retreat centre
Tairua, Coromandel (three hours south-east of Auckland)
Calendar highlights: visiting and local teachers including Sharda Rogell, Viranani, Hugh Tennent, Jeremy Logan
Number of meditators: 30?
United Kingdom
Gaia House
Devon (two hours south-west of London)
Calendar highlights: visiting teachers including Rob Burbea, John Peacock, Christina Feldman, Stephen and Martine Batchelor
One-month solitary retreat in November every year
Number of meditators: 60?
USA
Insight Meditation Society – Retreat Center
Barre, Massachusetts (two hours west of Boston)
Founding teachers: Joseph Goldstein, Jack Kornfield, Sharon Salzberg, Jaqueline Mandell
Calendar highlights: visiting teachers including Akincano, Guy Armstrong, James Baraz, Andrea Fella, Kamala Masters, Greg Scharf, Sharon Salzberg, Ajahn Sucitto, Carol Wilson
Three-month retreat late September – early December every year
Number of meditators: 96
Insight Meditation Society – Forest Refuge
Barre, Massachusetts (two hours west of Boston)
Calendar highlights: longer-term self-retreats throughout the year, supported by visiting teachers including Akincano, Bhikkhu Analayo, Guy Armstrong, Kamala Masters, Greg Scharf, Ajahn Sucitto, Sayadaw U Vivekananda, Carol Wilson
Number of meditators: 30
http://www.dharma.org/meditation-retreats/forest-refuge
Barre Center for Buddhist Studies
Barre, Massachusetts (two hours west of Boston)
Focusing on the integration of study and practice from various Buddhist traditions
Calendar highlights: visiting teachers including Akincano, Bhikkhu Analayo, Guy Armstrong, Shaila Catherine, Greg Kramer, Roshi Pat O’Hara, John Peacock, Ajahn Sucitto
Number of meditators: 36?
Insight Meditation Center
Scotts Valley, California (1.5 hours south of San Francisco)
Founding teachers: Gil Fronsdal and Andrea Fella
Calendar highlights: visiting teachers including Bhikkhu Anaalayo, Andrea Fella, Gil Fronsdal, Kamala Masters, Ajahn Sucitto
Number of meditators: 36?
http://www.insightretreatcenter.org/
Spirit Rock Meditation Center
Woodacre, California (1.5 hours north of San Francisco)
Founding teacher: Jack Kornfield
Calendar highlights: visiting teachers including Bhikkhu Anaalayo, Guy Armstrong, James Baraz, Andrea Fella, Kamala Masters, Gil Fronsdal, Greg Scharf, Carol Wilson
Two-month retreat February-March every year
Number of meditators: 96?
Jill Shepherd: insight meditation 