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Mitsui Designtec — CROSSOVER Lab: a rooftop garden, a kitchen bar and a room made of screens

Mitsui Designtec designs interiors for homes, hotels and offices. Its head office, CROSSOVER Lab, is a sequence of eight named areas: an art-filled space for meeting clients, a sunroom with circadian lighting, a café, a rooftop vegetable garden, a kitchen bar and a room wrapped in LED screens.

Company Mitsui Designtec Co., Ltd.Office CROSSOVER Lab (head office)Location [to confirm]Seating ABW on every seatWebsite mitsui-designtec.co.jp ↗
CROSSOVER Lab
CROSSOVER Lab

Concept

A lab for crossing over

The name says what the office is for: people inside and outside the company crossing over, and ideas crossing from one project to the next. Each of the eight areas has one clear role.

01 · CORDs

Digital meets analogue

CORDs is for co-creation with people inside and outside the company, used for receiving guests, meetings and events. Contemporary art that fuses digital and analogue makes a strong first impression.

CORDs
CORDs

02 · Work area & ANTENNA

ABW, and a hub for ideas

Every seat is ABW, with departments loosely zoned so people can talk as they work. ANTENNA gathers the project booths that were once scattered around the office, and shares work and ideas across the company. It reuses waste from the renewal and tries out new techniques.

The work area
The work area
ANTENNA
ANTENNA

03 · SUNROOM & D’s Café

Light that follows the body

SUNROOM is built for well-being: rich greenery and circadian lighting that changes with the body’s rhythm, for work or rest, with details that gently stimulate the five senses. D’s Café is where chance meetings happen, selling coffee, smoothies and light meals.

SUNROOM
SUNROOM
D’s Café
D’s Café

04 · SORANIWA & kitchen

A garden in the sky, a bar for guests

SORANIWA is an outdoor area for working in a different mood, for lunch or a break. Staff grow vegetables together, with sowing, planting and harvest events. The kitchen bar welcomes guests from outside; cooking together takes relationships beyond simply working together.

SORANIWA
SORANIWA
The kitchen bar
The kitchen bar

05 · MIRISE

Inside the design

MIRISE uses a large LED wall to immerse people in the spaces the company creates: 360° projections of past projects, VR, and drawings at a large scale for meetings and presentations.

MIRISE
MIRISE
CompanyMitsui Designtec Co., Ltd.
Official websitemitsui-designtec.co.jp ↗
Design[to confirm]
Photography© Mitsui Designtec (from the company’s recruiting site)
SourceMitsui Designtec recruiting site, “Head office”, re-reported by WALL
PublishedSeptember 2026
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