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Core Retreat

Our flagship 3-day retreat

Your 3-Day Synthesis Retreat



Synthesis Retreat - Legal, Professionally Facilitated and Medically Supervised Psychedelic Experienc

We offer an exclusive 3-day retreat in Amsterdam for individuals who want to utilize moderate-to-high doses of truffles containing psilocybin  to catalyze creative breakthroughs, deepen self-understanding, and feel ready to make their next big ‘leap’ in life.

This is a legal opportunity to take psychedelics in a safe, intentional and expertly-guided setting, geared to facilitating positive outcomes like heightened creativity, clarity on next steps in your life, and general personal development.

To create your experience, we will carefully modulate the following six conditions, each of which plays an essential role in every psychedelic journey:

  • Set. The mental attitude of a would-be psychedelic voyager

  • Setting. The surroundings in which a psychedelic substance is ingested

  • Guide. A person experienced with non-ordinary states of consciousness who helps to mitigate challenges and channel insights. (Read more about our team of coaches.)

  • Substance. The type and quantity of psychedelic agent; in this case, from truffles containing psilocybin

  • Session. The entirety of a psychedelic trip, including all activities and rituals

  • Situation. the environment, people, and culture from which a person comes to a session and returns to afterwards

When these elements are not carefully considered, and psychedelics are not used in a safe, supportive, and structured setting, many of their potential benefits may not be experienced. That’s why we pay such close attention to crafting the environment that we create for your experience. We understand that working with psychedelics can be intimidating; the nurturing environment we create will help to allay any concerns that may come up for you.

With due respect to the powerful nature of psychedelic experiences, and the strong impact that the presence of the others sharing the space can have on your trip, we limit each workshop to 12-16 carefully selected participants. Before joining us at Synthesis for your 3-day retreat experience, please complete the Book-a-Call process, including our health screening form, which will be assessed by our health screening team in advance of acceptance into our programs to ensure it is safe for you to come on a retreat with us.

I couldn't think of a better place for a truffle retreat. The team is very loving and supportive, the building modern and beautiful, the food lovingly prepared. I am glad that I took part and I will come again.
Marcel, Core Retreat Participant

Your Experience


Day 1: Preparation

After arriving at The Lighthouse, the main focus of your first day will be 1-on-1 conversations with your lead facilitators to help clarify your intentions during the retreat and calibrate your dose level. We will also discuss whether you want to optimize your experience for creativity on a professional level, for personal development or are seeking a mystical experience.

Day 2: Ceremony

On the second day of the retreat, you will participate in the ceremony, consuming the truffles containing psilocybin at either a low, moderate, or high dose. You will be fully prepared and comfortable in a setting perfectly optimized for your needs, allowing you to make the most of your psychedelic experience.


The retreat’s final day centers on the integration workshop. You will discuss and receive guidance on how to process your experience and integrate it into your life going forward. This will allow you to bring your newfound insights back with you and make concrete, meaningful changes.


Program Schedule


(Click below to read more about each day)

Day 1: Preparation

11:30 - Arrival 

13:30 - Welcome Circle

14:00 - Welcome Lunch

15:00 - Flight Instructions

16:30 - 1 on 1 Conversations

19:00 - Dinner

20:00 - Q&A plus Activity

Day 2: Ceremony

8:00 - Breakfast

9:30 - Breathwork

13:00 - Truffles Containing Psilocybin Ceremony

21:00 - Dinner

Day 3: Integration

8:30 - Breakfast

9:30 - Integration Part 1

11.00 - 1 on 1 Conversations

12:30 - Closing lunch

13:30 - 1 on 1 Conversations

14:30 - Integration Part 2, Closing Circle

16.00 - Departure

I want to thank the team for looking after us so well, competently and compassionately. I felt totally safe.
Susanne, Core Retreat Participant





Due to COVID-19 Restrictions, Our Retreat Center is Currently Closed

Due to the ever-changing COVID-19 global health impacts, travel restrictions and extended lockdown in the Netherlands, we’re still unable to reopen our wellness retreats.

Please note: As we’re able to resume retreat operations, you’ll be contacted when we’re able to begin the screening process that is required prior to offering you a retreat date. We will prioritize retreat bookings based on the completion of screenings and approvals.