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 16 - 20, 2025

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. 

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

Accommodation

Accommodation
Immersion Retreat

Venue & Amenities

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 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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Immersion Apprenticeship Retreat
This summer, I had the privilege of attending the immersion retreat from Synthesis in the Netherlands as an apprentice. It was a profoundly beautiful and insightful experience that provided invaluable lessons for my future practice as a psychedelic practitioner. The facilitators were experienced and very kind, creating a safe and supportive environment throughout the retreat. The food was also outstanding. I wholeheartedly recommend this immersion retreat.

5.0
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Amazing experience, people and team!
As a complete novice to entheogens/psychedelics it was amazing to see how the retreat catered to those of all levels, helping a rookie like me feel very safe & secure while still keeping those with more experience really engaged! They do a great job of curating groups of awesome people, while our group was very diverse there was no drama or issues.

5.0
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Fantastic!!!
I attended the Synthesis Immersion Retreat as both a student and a participant. The facilitators were top notch in every way: highly experienced in indigenous and western medicine traditions, live music as well as playlists, breath work, compassionate caretakers, deeply present to each of us. Their teaching was clear and relevant. I learned so much about facilitating medicine journeys, and I also dived deep into my own journeys.
In addition, the location is gorgeous. My only complaint is that the tents were so hot during the day (nights were fine), even though they were air conditioned, that you really couldn't hang out in there. But no problem because there are lots of beautiful spaces to hang out by yourself or with others. The waterfalls are fantastic, and fun getaways from the "work."
Food was amazing, and the chefs were so friendly and always committed to meeting any special dietary needs.
I highly recommend this retreat.

5.0
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One of the best weeks of my life
I can’t recommend this retreat highly enough, from the pre-retreat preparation to the post-retreat integration and everything in between, the details and delivery were immaculate. The venue was beautiful and the ceremonies were treated with reverence and respect. The leaders and facilitators created a safe space, and provided a range of complementary activities between the ceremonies. Thank you Synthesis 🙏

5.0
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The experience is incredibly well organized, held, safe, and beautiful
This has been a significant experience for me. If you ever get the opportunity to participate, don’t even hesitate. The experience is incredibly well organized, held, safe, and beautiful

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