Sparjeburd 2, 8409 CK Hemrik, Netherlands
Up to 15 in group
April 7 - 11, 2025
About this Retreat
Role: Lead Facilitator.
Costanza began working with psychedelics in 2012, initially as a participant, later as an assistant, then began training with shamans and healers, and eventually studied to become a Psychedelic Practitioner. Her last few years have been devoted to psilocybin, though she has worked with a variety of plant medicines. She is also a breathwork coach, working with the body's knowledge to achieve understanding and promote healing. She has trained in Bioneuroemotion, a field that blends biology, neuroscience, epigenetics, NLP, and psychology. She received training in India to be able to instruct in meditation, yoga, and pranayama. She has finished a master plant dieta with Noya Rao and follows the tradition of the Shipibo from Peru in terms of shamanic techniques.
Her facilitation style combines ancient wisdom methods with cognitive therapeutic techniques from the West to produce powerful transformational experiences. When singing in ceremony, Costanza places emphasis on the healing potential of music. Her goal is to serve as a bridge for people seeking to start or continue their own journeys of self-discovery; creating safe spaces so others can engage in their psychedelic healing experiences feeling supported and empowered so their own inner wisdom can emerge.
Role: Retreat Facilitator.
Juan has studied music since childhood and music production at University. He became interested in psychedelics and their strong influence on music and consciousness from an early age. He has spent years in India practicing meditation and yoga in various ashrams. He studied the Bansuri flute with the legendary Pandit Hariprasad Chaurasia, and now teaches and makes Bansuri himself.
He has been dedicated to facilitating live music for meditation, healing, and psychedelic ceremonies for many years, for the Ayahuasca tradition of Colombian Shamans and increasingly for psilocybin journeys. Juan is passionate about the transformative power of psychedelics, what they can bring to humanity, and how they can help us heal our connection to nature and spiritual growth.
Bernardino is a Religion Sociologist and Physiotherapist (specialised in manual therapy and myofascial disorders), born in Venezuela but currently living in Madrid, Spain. He has been studying yoga, meditation and ancient traditions for more than 20 years.
In the last ten years he has worked as a yoga Alliance certifier delivering 200-TTC and workshops all around the world. Having a passionate interest for the use of psychedelics in ancient cultures and religion practices, he is very interested in exploring the effects of psychedelics combined with ancient eastern practices as yoga and Qigong as a way of expanding human consciousness and finding inner balance . Having music background as guitarist and flute player, he enjoys playing music from different traditions in the context psychedelic ceremonies.
Mary is a psychotherapist with over 30 years experience of working in a variety of UK healthcare settings as a clinical supervisor, group facilitator, researcher, and educator. She specializes in helping people face loss and change, illness, and death, and is particularly interested in how nature connection, mindfulness, self-compassion, and vision quest rites of passage can support journeys of personal growth, transformation, and healing. In her spare time, she tends an old Cornish garden, which has lots of flowers and brambles. She swims in the sea all year round and loves to walk in wild places.
Details of this retreat
Synthesis’ Renowned 5-Day Psilocybin Retreat in Costa Rica
Step into a transformative journey of healing, growth, and connection. With six weeks of guided preparation and integration surrounding a 5-day immersive retreat in the green landscapes of the Netherlands, this experience offers the opportunity to reset, reflect, and reconnect with your true self.
Guided by Synthesis, a pioneer in the modern psychedelic movement, you’ll benefit from years of research, practice, and innovation in safe, legal, and transformative psychedelic care.
Retreat Highlights
Expertly guided psilocybin healing ceremonies in a legal and supportive environment.
Breathwork, yoga, and embodiment practices designed to deepen your experience.
Voice and live music sessions to enhance connection and emotional release.
Preparation and integration sessions to support your journey before, during, and after the retreat.
Trauma-informed care led by experienced Synthesis retreat facilitators.
About This Retreat
Life can often feel like a whirlwind of responsibilities, leaving little room to pause and reconnect with what truly matters. This retreat offers a rare opportunity to step away from the busyness of everyday life and immerse yourself in profound healing and self-discovery.
Synthesis is known for its pioneering role in the modern psychedelic movement. With over 1,100 participants guided through safe and legal psilocybin experiences, we’ve refined a unique approach that bridges ancient wisdom, modern science, and holistic care. Our retreats are rooted in ‘The Synthesis Way,’ a framework that integrates four guiding lenses:
Embodied Wisdom: Cultivating self-awareness and personal ethics.
Cognitive Wisdom: Grounding the experience in science, psychology, and history.
Sacred Wisdom: Honoring spiritual and nature-based traditions.
Relational Wisdom: Fostering connection and collective growth.
We warmly invite you to join our upcoming retreat at the breathtaking HOLOS retreat center in Costa Rica, from February 23–27, 2025. Led by our trusted team of facilitators, this experience is designed to provide a safe, supportive, and transformative journey for all participants.
Why Choose a Synthesis Retreat?
Pioneers in the Field: Synthesis is a leader in modern psychedelic care, with experienced facilitators trained in globally recognized programs, including ‘The Synthesis Way.’
Safety First: Our comprehensive health screenings and trauma-informed approach ensure a safe and supportive environment.
Community: Build meaningful, lasting connections with like-minded participants.
Integrative Care: We combine ancient traditions with modern science to create a deeply transformative experience.
The Synthesis Way: A Transformative Approach
At Synthesis, we’ve guided over 1,100 participants from across the globe through safe, legal, and profoundly transformative psychedelic experiences. Here’s what makes our approach unique:
Safety First: Your well-being is our top priority. Our facilitators combine ancient wisdom with modern science to create a safe and supportive environment. With trained psychologists, psychotherapists, and access to medical professionals, we conduct thorough health screenings to ensure suitability and minimize risks. You’ll feel supported every step of the way, from preparation through integration.
A Legal and Secure Space: We operate exclusively in jurisdictions where psilocybin use is fully legal, allowing you to focus on your experience with peace of mind. By sourcing medicine locally and honoring sustainability, we provide a secure and ethical foundation for your journey.
The Power of Communitas: Healing and growth flourish in a shared space. At Synthesis, retreats foster a deep sense of connection and belonging, creating a community that amplifies the transformative potential of the experience and often leads to lifelong bonds.
Training the Next Generation: By honoring ancient traditions and blending them with modern expertise, we’re advancing the field of psychedelic therapy. Trainees from our Practitioner Training Program actively witness retreats, learning directly from experienced facilitators through observation, mentorship, and hands-on practice.
An Integrative Framework: Our retreats are guided by the Four Lenses, offering a holistic path to transformation...
Embodied Wisdom: Cultivate self-awareness and personal ethics.
Cognitive Wisdom: Ground your journey in science, psychology, and history.
Sacred Wisdom: Honor spiritual and nature-based traditions.
Relational Wisdom: Foster meaningful connections and shared growth.
Personalized Care: Every retreat is designed to support your unique intentions. Through personalized goal-setting, hands-on guidance, and one-on-one sessions, our approach ensures you feel seen and supported. You’ll leave with clarity, purpose, and a community to walk with you beyond the retreat.
Ethics You Can Trust: Rooted in our Practitioner Code of Ethics and Conduct, Synthesis upholds the highest standards for safe and ethical care, ensuring every aspect of your journey reflects integrity and respect.
Sound and Movement: Music and movement are integral to the retreat experience. Live music and somatic practices create space for emotional release and healing, while curated soundscapes foster lasting insights and transformations.
What’s Included
5-day retreat at NEW EDEN in the Netherlands
3 pre-retreat preparation sessions
2 psilocybin healing ceremonies
2 breathwork sessions
Sharing circles and one-on-one preparation and integration sessions
Yoga, voice, embodiment, and nature practices
Live music to enhance your journey
3 post-retreat integration sessions
Guidance from experienced, trauma-informed Synthesis facilitators
Additional Information
Synthesis’ retreats don’t just provide a safe and transformative space for personal healing—they also contribute to the future of psychedelic care. Trainees from our Practitioner Training Program join as active witnesses, learning directly from experienced facilitators to advance the field of psychedelic therapy.
With every retreat, we honor ancient traditions while integrating the latest research and ethical standards. Your participation contributes to a broader movement of healing, sustainability, and connection.
Join us for this unique opportunity to reset, reconnect, and renew alongside a circle of open-hearted individuals in the beauty of the Netherlands,
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