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Synthesis Institute
Hemrik area ("New Eden" retreat property), Netherlands
Synthesis Institute’s immersion retreat is a 5-day in-person program set inside a roughly seven-week arc (about three weeks of preparation calls, the retreat, and three weeks of integration support), held at a property in the Hemrik area, around 90 minutes from Amsterdam.
The program describes a detailed three-step screening process — application, a refundable deposit, and a comprehensive health screening — with an explicit contraindication list covering psychosis, suicidal ideation, dissociative disorders, personality disorders, and prior psychiatric hospitalisation. Group size is stated as up to 15–20 participants with a roughly 1:3–4 facilitator ratio.
Vetting checklist
Vetting checklist
Self-reported by the operator's public materials and reviewed by us where possible. "Stated" means the operator publicly discloses this; it is not independent verification.
- Legal jurisdiction disclosed— Stated ✓
- Medical / psychological screening process— Stated ✓
- Facilitator training & experience— Stated ✓
- Emergency protocol in place— Not yet verified
- Independent reviews findable— Not yet verified
- Pricing disclosed upfront— Stated ✓