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Office · Hiroshima · Manufacturing

Molten — Hiroshima: an office with a real fire in it, and sheep outside

Molten makes the balls used in international basketball and volleyball. At its Hiroshima development building the letter o in the company name contains a flame — so they built one: a real fire pit you can sit around, with a field and sheep on the other side of the glass.

Company Molten Corporation (モルテン)Location 4-10-97-21 Kanon-shinmachi, Nishi-ku, HiroshimaBuilding [the Box]Named places Fire pit, Hakoniwa, Terrace, Giant Steps, Office, Library, Cafe, test room, Chogae canteenFaçade Aluminium composite panel in a custom colour, jointed to read as one mirrorWebsite molten.co.jp ↗
Giant Steps
Giant Steps

Concept

Put the logo on the ground and light it

The building is called [the Box], and the company describes it as a place where conversation is drawn out of people naturally, with each community given the functions it actually needs.

The façade sets that up. A mirror-like skin was wanted, and aluminium composite panel was chosen once function, durability and cost were weighed; the colour and gloss are custom-made to match the company’s image, and the joints between panels are kept tight so the wall reads as a single mirror. Fins and slit louvres divide the floors. The look changes with the hour and the weather.

The façade
The façade
The façade and the sky
The façade and the sky

01 · The fire

Because the logo has one

The o in molten is drawn with a flame inside it, and the flame is treated as the symbol of the company — so an area with a real fire was built, to be talked around and sat beside. Floor tiles run continuously from the fire to the canteen so the two read as one route, and the fire table and the seating around it are set out with drainage and falls so that rainwater cannot stand.

The fire pit
The fire pit

02 · Hakoniwa

Sheep, and a field

Beside people who develop, sell and market inanimate products, the company put living things that cannot be fully controlled: animals and plants. There is a field, and sheep to look after. On a good day going outside is natural, and the company argues that is itself a kind of variety in how you work. In a few decades, it hopes, the trees will have grown into a miniature landscape for the whole area.

Hakoniwa
Hakoniwa

03 · Terrace

The sea, withheld

The site looks at the sea, but from inside the building you cannot see it for a long time. You only reach it by climbing Giant Steps to the third floor, where a terrace opens onto the water. The designer wanted the feeling of the sea wind to arrive as an event.

The terrace
The terrace

04 · Giant Steps

A stair that crosses the building

The great stair cuts diagonally through the void and ties the divisions together on the way up.

Giant Steps
Giant Steps
The stair, close up
The stair, close up

05 · Office and Library

Where the work is

The working floor runs long and low-lit, and beside it a library is built into the shelves with a bench set inside them.

The office floor
The office floor
The Library
The Library

06 · Cafe, test room and canteen

The rest of the box

A café counter faces a screen; the test room keeps the machines the products are put through; and the canteen, named Chogae, finishes the tour.

The Cafe
The Cafe
The test room
The test room
The canteen
The canteen
CompanyMolten Corporation
Design[to confirm]
Photography© Molten Corporation (from the company’s own site)
Sourcemolten [the Box], “and more”, re-reported by WALL ↗
PublishedSeptember 2026
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