It Wasn't
Natural Light.

01A Ghibli-like building in the mountains

In short The Akino Fuku Museum sits in Tenryū ward, Hamamatsu — about 40 minutes by car from Hamamatsu Station, up along the mountains. Designed by Terunobu Fujimori, and absolutely worth the trip.

The museum is a 40-minute drive from Hamamatsu Station, heading up into the hills. Honestly, it's far. But the satisfaction was worth every minute.

The exterior, in a word: Studio Ghibli. A building like Howl's Moving Castle standing quietly in the mountains — stone-shingled roof, walls the color of straw and earth, as if it had grown out of the hillside.

02A museum you walk through in bare feet

In short You take off your shoes to view the collection. A rattan-mat floor leads into a large open gallery — the experience feels special from the first step.

What struck me most inside was the gallery corridor. You take your shoes off to enter this museum. The floor has the feel of woven matting, warm and pleasant underfoot, opening into a generous space.

There are very few museums where you check the texture of the floor with your feet while looking at paintings. Some visitors sat straight down on the floor to look. Even the way time flows here feels designed.

03Sunlight falling through the louvers — or so I thought

In short On the right side of the corridor, soft light spills through a louvered ceiling onto the artworks. Anyone would read it as daylight.

In that corridor, on the right-hand side, there are louvers — and I was sure natural light was pouring through them. "Daylight, falling on the paintings. How beautiful," I thought, and stood there admiring the room.

04The reveal: it was fluorescent light

In short The light was not daylight but fluorescent tubes behind the louvers. The louver spacing — and a floor you cannot step onto — hide the light source completely from view.

It wasn't natural light. It was just fluorescent tubes.

It wasn't natural light. It was fluorescent.

The louvers are set at an exquisite interval in front of the tubes, so from where you stand, the source is completely hidden. It looks exactly — exactly — like daylight falling into the room.

And there is a second trick: the floor. A wooden border runs around the matted area, and beyond it, on the side closest to the artworks, the floor changes to a different material — and you are not allowed to step on it. Which means you can never get close enough to peer up into the louvers. Unless you strain to look, you will never know.

What I had read as "a corridor with daylight filtering through louvers" was in fact a sealed room without a single window. But the comfort was real. That was the biggest discovery of the day.

05Plaster walls and shadow — a white room of deep silence

In short Earthen plaster walls receive the light softly. The room is white, yet still and calming — the quality of light is decided by the quality of the wall.

The walls are finished in plaster mixed with natural material, and the balance between that surface and the shadows is superb. Being in this space simply settles you. A white room, yet with the hushed air of a meditation chamber.

A space that should feel shut-in — no windows at all — yet has both openness and calm. As a lesson in building atmosphere, I couldn't have asked for more.

In terms of designing darkness and light, it felt like the same story I saw at Unryū-in in Kyoto — "viewing a bright garden from a dark room" — happening again inside a modern museum.

06The main hall — a "skylight" that is actually wall windows

In short The main hall is lit only by sky light falling through a large ceiling opening — like a spotlight. And the source is not a skylight at all, but ordinary windows set high on two walls.

Then, the main hall. The design here is bold: a large square opening cut through the ceiling, with sky light pouring down through it. Seen flatly it is just a big hole — but that one spot glows, the light diffuses across the white walls, and the exhibits seem to shimmer in it.

Here comes the second reveal. I assumed a skylight sat at the very top. It is not a skylight — just ordinary windows on two of the four sides above the opening. So the light volume isn't huge. But every bit of it drops into the hall, and that makes the brightness you see.

A staff member told me the hall looks completely different depending on the hour. I visited around noon, sun high, the most beautiful light of the day. In the evening, or on rainy days, the light thins to almost nothing —

The hall becomes the bottom of a deep sea, with sunlight barely seeping in from above.

I found that thrilling. The room changes its face every single day. And because the windows are on walls, the leak risk that comes with skylights drops, and direct sun never strikes the artworks. Pragmatism and magic, achieved by one and the same design.

07"Shadow and Pokkori" — sculptures drawn by shadows

In short During my visit, the special exhibition by sculptor Michiko Nakatani was on (through August 23, 2026). Under the sky light, her reliefs reveal their outlines through shadow — in perfect resonance with the hall.

The limited-run exhibition was wonderful too: "Shadow and Pokkori" by sculptor Michiko Nakatani, with works you are allowed to touch. Sculptural pieces placed under that falling sky light, their contours surfacing through shadow.

Light that shifts with the hours, and artworks whose main character is shadow itself. It is rare to see a space and an exhibition mesh this tightly.

08Dropping skylight into the middle of a house

In short This window strategy translates to housing: cut an opening through the center of a two-story house, set windows high on the walls above it, and let sky light fall into the living room.

I kept thinking: this could work in a house. Take a two-story home and open a void in its center. This museum only has windows on two sides — so keep rooms on the other two sides, and let sky light drop into the heart of the house, into the living room, and diffuse from there.

No direct sun, so furniture won't fade easily. And the center of your home changes its expression with the hour and the weather, every day. I would love to see that house.

Above all, this visit gave me a new pair of eyes for architecture. There was so much here to carry home — to my own future house, and to the homes I get to help propose. Making people feel nature in a place with no windows: now I know what that looks like.