Cameron's Staff Pick iconCameron's Staff Pick

Immersion: Synthesis’ 5-Day Legal Psilocybin Retreat in the Netherlands

Location icon
Sparjeburd 2, 8409 CK Hemrik, Netherlands
Users icon
Up to 20 in group
Date
August 2 - 6, 2026

Retreat Highlights

  • Two guided psilocybin ceremonies in a safe, legal setting
  • Intimate group sizes (about 20-25 people total)
  • Breathwork embodiment practices for deeper processing
  • Live music and sound healing facilitation during ceremony for intentional emotional release and connection
  • In-depth preparation, integration, and 1:1 support throughout your journey
  • Trauma-informed care from our highly experienced Synthesis facilitators, who have guided more than 1,100 participants since 2018

About this Retreat

Details of this retreat

What if you could connect with the deepest parts of yourself, discover new insights, and step into a life of greater clarity, connection, and purpose?

At Synthesis, we warmly invite you to join Immersion—a comprehensive 7-week program that includes pre-retreat preparation, a 5-day psychedelic-supported retreat in the serene landscapes of the Netherlands, and post-retreat integration.

Designed for those who are eager to gain clarity and direction on their path forward, tune in to their deepest wisdom and truth, and unlock a greater sense of purpose and meaning in their life, we offer a safe space to intentionally explore the power of psilocybin truffles to catalyze lasting personal change and embody your most authentic self.

Since 2018, we’ve supported over 1,100 individuals through safe and legal psychedelic retreats. Using our integrative approach to transformative wellness, we combine leading-edge research with ancient wisdom traditions, rituals, and spiritual practices to curate a potent container that has the potential to catalyze lasting change and wellness.

“I did not really know what to expect, but what I received was beyond my wildest dreams. It was an exquisitely beautiful, profound experience. I am going to say: the most profound, exquisitely curated experience of my life."

– Corina

Past participants have shared that our retreats have helped them:

- Reconnect with their authentic self and inner wisdom
- Heal emotional wounds and release what no longer serves them
- Find clarity and connection in a supportive, nurturing environment
- Navigate life transitions and a renewed sense of purpose

If this resonates, then this retreat will be an exceptional opportunity for you to join us in communitas, no matter where you currently are in your process.

Disclaimer: Synthesis is owned by Retreat Guru.

Schedule

Day 1: Your retreat begins the day you arrive at the venue. We will start with a welcome circle, followed by one-on-one facilitation meetings where you will clarify your intentions and confirm the dose for your first psilocybin mushrooms (or truffles) experience. The evening culminates in a group sound meditation experience.

Day 2: After morning practice and detailed instructions, you will participate in your first psychedelic ceremony using psilocybin mushrooms (or truffles). You will be fully prepared and made comfortable in a setting optimized for your needs, allowing you to make the most of your psychedelic experience.

Day 3: You will spend time integrating your first psychedelic experience while simultaneously preparing for your next one. The schedule includes group practices, integration workshops, and one-on-one meetings with an experienced facilitator.

Day 4: After morning practice and a guided workshop, you will experience your second psychedelic ceremony.

Day 5: The retreat’s final day centers on integration. You will participate in one-on-one and group integration sessions to begin processing your experience which will help support and enable you to integrate it more fully into your life.
Note: Schedule is approximate and may change

Getting Here

Location icon The Synthesis Institute, Sparjeburd 2, 8409 CK Hemrik, Netherlands

Directions

You can reach the retreat center easily by taking a train from any part of the country to Heerenveen, and then taking a taxi to New Eden. Alternatively, you can also use taxi services such as Uber, Bolt, and private taxi companies that operate in the country.

Accommodation

Accommodation
Immersion Retreat

Venue & Amenities

Venue & Amenities
A/C in Rooms icon A/C in Rooms
Free Wifi icon Free Wifi
Spa icon Spa
Sauna icon Sauna
Pool icon Pool
Towels icon Towels
Free Parking icon Free Parking
Kitchen icon Kitchen
Tour Assistance icon Tour Assistance
Hot Tub icon Hot Tub
Coffee/Tea icon Coffee/Tea
Cafe icon Cafe
Restaurant icon Restaurant
Fitness Center icon Fitness Center
Yoga Studio icon Yoga Studio
Housekeeping icon Housekeeping
Bicycles For Rent icon Bicycles For Rent
Nestled within 50 acres of serene Dutch countryside just 90 minutes from Amsterdam, New Eden has been a wellness sanctuary for nearly 30 years.

Here, you’ll feel like family, surrounded by pristine nature and beautiful, serene accommodations. At New Eden, you will find the perfect blend of European charm, warmth, and comfort, creating a space where deep personal work feels natural and effortless.

Meals

Menu
Menu

Menu Types

Our menus are created to be wholesome, balanced, and aligned with the needs of your experience. If you have dietary preferences or restrictions, we’re here to accommodate you with care.

What's Included

  • Three 75-minute pre-retreat preparation sessions to set intentions and prepare
  • Five days at the peaceful New Eden retreat center in the Netherlands
  • Two guided psilocybin healing ceremonies with psilocybin truffles
  • Two transformative breathwork sessions to deepen your journey
  • Daily voicework and embodiment practices for connection and grounding
  • Live music to support and create your experience
  • Sharing circles and one-on-one integration support for reflection and growth
  • Three post-retreat integration sessions, including somatic and social integration tools to set intentions and remain connected moving forward
  • Personalized guidance from experienced, trauma-informed Synthesis facilitators

What's Not Included

  • Airfare
  • Travel

Customer Reviews

5.00 out of 5.0 average rating

5.0
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Deep and rich educational experience
The synthesis learning will stay with me as a guide and resource centre for a long time to come, perhaps or even probably lifelong. The assignments were practical and thoughtful in the way they built on each module of learning. I found the curriculum, with its monthly focus on each area of psychedelic facilitation practice through each of the four lenses, provided me with an enjoyable and reliable cadence. The content was so rich and diverse, generously delivered by such different wise, experienced people, and considerate of many different perspectives that I felt it was expanding not only my understanding but also my toolbox of things to use straight away as well as learn more about. As the year progressed I felt more confident in describing my place in this field, where I have come from, where I may be headed and how my world today integrates with that. There was no pressure to perform or know, in fact the invitation was to remain as long as I wanted to be in liminality for all that could be learned and experienced there. I feel I have worked alongside and become more part of a network of professionals who care about what is most important - safety, ethics, keeping the dialogue open and reciprocity, amongst other things. It really has been a wonderful learning experience, which has expanded my repertoire and skills. Thank you

5.0
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Immersion Training Retreat
I was part of the Synthesis Immersion Training Retreat as part of my co-facilitator training April 26 - May 3 at the New Eden Retreat Center. Lesley, Hanneke and Léla were the guides. I consider myself extremely privileged to have been an active witness as well as participant. Lesley embodies what she teaches. Her knowledge, experience and skills were displayed in so many wonderful ways. Her calm and grounded ways and her gentle approach create an incredible sense of trust. Lesley reminds me of a light tower, firmly grounded, calmly sending its light to the ships to help them nagivate challenging waters. Thank you Lesley, I learned so much.

5.0
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Synthesis Immersion Training Retreat
I participated in the Synthesis Immersion Training Retreat, April 26 - May 3. Hanneke was part of the team with Lesley and Léla. What a wonderful experience! Hanneke's lively ways, her authentic and honest approach, her masterful ways of dealing with a challenging situation, will always be remembered. Hanneke also lead the 1:1 interviews with me. I very much appreciated her direct approach, her way of challenging my thinking and assumptions, and her support with a special request. Hanneke's 'make a deal and stick to it' and 'sometimes you are water and sometimes you are a rock' will stay with me. I am grateful for everything.

5.0
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Immersion Training Retreat
I took part in the Immersion Training Retreat as a co-facilitator in training and as a participant https://www.synthesisinstitute.com/immersion-training-retreat. It was an outstanding experience. The three guides Lesley Joy Quilty, Hanneke Shots and Léla Mosemghvdlishvili were outstanding. They truly embody and represent want I wish to be someday. I consider myself blessed and priviliged to have been an active witness as they held space and dealt with challenging situations. The variety of workshops, exercises and rituals added to the wealth of knowledge and experience I was allowed to get. - Thank you Synthesis, thank you Lesley, Hanneke and Léla. - The New Eden Retreat Center is a wonderful and very practical location for this retreat, a great setting.

5.0
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Skilfully facilitated, safe, transformative, and playful.
This was my 2nd retreat with Synthesis. I have been working with psychedelics/plant medicines in intentional settings for around 4 years, and recreationally for around 15 years. I would recommend Synthesis retreats for anyone new to psychedelics, as well as more experienced journeyers who are curious to explore their relationship with medicine in a different than might be found in underground or indigenous contexts.

The facilitation team are highly skilled, holding perhaps the safest container I have experienced on a retreat. They're also loving, warm, down to earth people who are just as committed to connecting with the group as they are facilitating the journey itself. The retreat centre is so cosy, and situated in the middle of woodland. It's a very soothing place to be, and the food is the best I've ever had on any retreat (genuinely mind blowing!!!).

One of the most valuable aspects of the retreat was how well rounded and diverse the shared palette of skills, practices, experience and worldviews of our facilitators was. Between them, we had the support, perspective, and holding of a psychotherapist with specialist training in psychedelic work; a practitioner with direct and ongoing training in indigenous medicine traditions; and a third practitioner with a foundation in a range of meditative practices, in academia relevant to this work, and having extensive personal experience with various medicines. This range informed a deep and rich preparation, journeying, and integration, offering us many ways of relating to our experiences beyond just the word.

Thanks to this approach I have been able to explore my subjective as well as and the group dynamic, through movement, sound, meditation, breathwork, creative expression, and of course psychedelics.

I'm a student with The Synthesis Institute and I have now journeyed as a participant, as well as in an apprenticing role. I highly recommend Synthesis retreats for anyone curious to explore intentionally with psychedelics in a safe environment, guided by experienced, caring, and skilled practitioners. And I highly recommend their training to any aspiring practitioners - I have found it to be thorough, inspiring, and very nurturing to my journey along this path.

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