The influences behind SAISEI

Our story

SAISEI / Japanese for renewal

The art of renewal.
Portrait of Guillaume, founder of SAISEI

Guillaume / Founder

I’m Guillaume, founder of SAISEI. My experience at Tomorrowland taught me how atmosphere, thoughtful details and shared moments bring people together. With SAISEI, I bring that approach to team off-sites, creating space for strategic focus, fresh perspectives and connection.

01 / Experience

Tomorrowland

Years working at Tomorrowland shaped our understanding of what makes an experience memorable. Attention to atmosphere, detail and shared moments now informs how we curate off-sites around your team’s strategic agenda.

Tomorrowland stage and crowd, illustrating the founder’s experience background
02 / Lifestyle

Blue Zones

Blue Zones are regions studied for the unusually long lives of their residents. Research by Dan Buettner, including in Okinawa, inspired SAISEI’s emphasis on everyday movement, food, purpose and connection, alongside focused strategic work.

A blue bench in a tree-lined residential street
03 / Teamwork

Lencioni

Patrick Lencioni’s team pyramid provides the foundation for our team performance exercises. Trust forms its base, building through constructive disagreement, commitment and accountability towards collective results. Shared challenges and guided reflection bring these principles into practice.

Egyptian pyramids — a visual metaphor for building a strong foundation

From inspiration to experience