GREEN SPRINGS is a district in Tachikawa, Tokyo, built on a site that allowed a floor area ratio of 500% but uses only about 150%. Sky, water and lawn were kept instead; there are no fences or gates, and the grounds stay open around the clock. The hall and the hotel are run in-house, and the events are planned by the same team. The concept came first - a well-being town where the sky, the land and people connect - and the buildings, the tenant mix and the way the place is operated all followed from it. This talk traces the decisions from 2015, when the land was acquired without a concrete plan, through the opening in 2020 to the present: what the client considered, what was chosen, and what was given up. Well-being is not created by installing equipment, but there is ample room for technology that supports it, measures it and keeps it going. The panel that follows explores what that could look like, using GREEN SPRINGS as the material.

GREEN SPRINGS in Tachikawa was developed around the concept of a "well-being town". Built around sky, water and greenery, it is now a place many people love. What would it take to carry that comfort into future well-being developments? In this panel, four people involved since the planning stage - the developer-operator who led it from concept to operation, the architectural project manager, the concert hall planner and operator, and the brand director - look back candidly at what they aimed for, what they could not fully define as requirements, and where technology was never connected. One lesson, for example, is that water and greenery are harder to maintain than to create. How can technology change the effort and cost of keeping them? Can physical AI and other new technologies be built in from the start of planning, rather than added later? Rather than offering answers, the panel shares open problems and hints for technology development, to spark new cross-industry collaboration.