The Amsterdam hub is open to anyone in the Netherlands. You do not need to be Dutch, but we do insist you primarily live here.
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Sandbox is a group of people who share values, enjoy spending time together, and help each other. We started as a leadership and entrepreneurship community, but over time evolved to care more about shared values than about shared interests.
Sandbox is:
✅ a global community of people ✅ free and volunteer based ✅ about personal growth
Sandbox is not:
❌ a networking club ❌ an interest group ❌ about professional achievement



Our retreats are the heartbeat of our community. Once a year we organise a global retreat for 200-300 people, and throughout the year we host smaller local ones for 10-30 people as well. Retreats are organised by local members, and do not turn a profit.
We’ve held global retreats in Croatia, Portugal, Panama, Kenya, Mexico, and Vietnam. More local retreats have happened than we can count. Every retreat has it’s own flavour, from hiking in the mountains (Lisbon hub) to a cabin in the woods (Berlin hub) to ski trips (Leman hub).
Most retreats feature an exchange of ideas, often in the form of workshops. While we tend not to talk about our professional life a lot, we do love sharing what we have learned.
The Amsterdam hub members share three key characteristics, we are: