The tree under “skylight”, a calculated lighting by reflection, is a focus in the office lobby for staff resting. Floored by external pavers, it is an internal Zen courtyard with external atmosphere. The “skylight” creates an illusion of sky above, breaking the vertical limit of a relatively low headroom office. The courtyard can be viewed from all common areas via openings of different sizes and opacity. Each meeting room and waiting area break the horizontal limit by borrowing views from the courtyard. The office is also extended horizontally by including the common lobby and maximizing sea view by the use of glass and mirror.