Nature-Inspired Office Wall Art: Biophilic Design Explained
Why Windowless Offices Fill Up With Pictures of Trees
Here's a small thing researchers keep noticing, and it says more than it looks like it does.
When a team surveyed 385 Norwegian office workers, the ones stuck in a room with no window turned out to have roughly three times the odds of displaying a picture of nature on their wall. They had about five times the odds of having dragged in a plant, too. That held up even after the researchers accounted for age, job type, how much control people had over their work, and how much they decorated in general.
Nobody instructed them to do it. They just did.
The pattern isn't new either. In 1986, two researchers walked round offices counting what people had put on their walls, and gave the habit a name: surrogate views. Landscapes, mostly. Something to look at that isn't wall.
So there's a question sitting underneath all of it. Does a picture of a wood actually do anything? Or does it just feel like it should?
Biophilic Design, Explained Without the Buzzwords
Biophilic design has turned into an interiors buzzword, which is a bit of a shame, because it began as something far more specific.
Biophilic design is the deliberate use of nature indoors — real, represented or simply referenced — and images of nature count as one of its recognised tools, not a decorator's shortcut.
The word came from the biologist E.O. Wilson, who in 1984 described biophilia as "the innate tendency to focus on life and lifelike processes". Turning that idea into something architects could actually build with fell largely to Stephen Kellert, a professor of social ecology at Yale who worked alongside Wilson through the 1980s and co-edited The Biophilia Hypothesis. Kellert argued that our dependence on nature "goes far beyond our reliance upon material and physical sustenance".
His later list runs to 25 elements in three groups. One group is called Indirect Experience of Nature, and sitting inside it, plainly named, is Images. Right beside materials, texture, colour, natural geometries and biomimicry.
So art on the wall isn't a workaround people invented. It's in the discipline's own list.
Two Theories That Explain Why a Tree Calms You Down
Why would looking at greenery change anything? There are two main explanations, and they don't say quite the same thing.
The first is attention restoration theory, from Rachel and Stephen Kaplan. Deliberate focus, they argued, is a limited supply. Burn through it and you get directed attention fatigue — that gritty late-afternoon feeling where you read the same line four times. Nature restores it because it offers soft fascination: gentle stuff that holds your eye without demanding anything. Leaves moving. Water. Clouds. Hard fascination, like a football match, grabs you completely and leaves no room to think.
The second comes from Roger Ulrich, and it's about the body rather than attention. His 1984 study in Science compared surgical patients whose window faced trees with matched patients facing a brick wall. The tree group went home sooner and needed fewer moderate and strong doses of painkiller.
Worth knowing: the attention theory has real critics, who point to messy measurement and disagreement over what even counts as nature.
So Can a Picture Do What a Window Does?
Now the awkward part, and the reason this article exists.
That famous nature-walk study by Berman, Jonides and Kaplan had a second experiment most people never mention. Twelve participants sat in a quiet room and rated 50 nature pictures and 50 urban pictures, about seven seconds each. Roughly ten minutes, no walking, no fresh air. Backwards digit span improved only after the nature images. On a separate attention test, only executive attention shifted — the researchers put it as brief interactions with nature raising cognitive control.
Then there's the study that should make anyone honest hesitate. Kahn and colleagues sat 90 people in an office with either a real glass window onto a nature scene, a plasma screen showing that same scene live, or a blank wall. The window beat the blank wall on heart rate recovery. The screen was no better than the blank wall at all.
| Behind your desk | What was measured | What was found |
|---|---|---|
| Real window onto trees | Surgical recovery; heart rate after stress | Shorter stays, fewer strong painkillers, fastest recovery |
| Screen showing that view live | Heart rate recovery | No better than a blank wall |
| Still nature imagery | Attention, working memory, anxiety | Real gains, on a smaller evidence base |
| Bare wall | All of the above | The baseline everything is judged against |
What Hospitals and Offices Found When They Hung Nature Up
Hospitals are where this got tested properly, because hospitals measure things.
A Swedish intensive care study followed patients recovering from heart surgery. Those given a nature view used less strong pain relief and reported less anxiety. And here's the detail that rarely travels: in that same study, abstract art produced more anxiety than no picture at all. The image that worked was a landscape with water, trees and plenty of visual depth.
A scoping review pulled the whole area together and counted: seven studies showing patients prefer natural scenes and figurative art, two showing no preference either way, sixteen showing positive effects on wellbeing, five showing effects on measurable clinical readings. The reviewers' own verdict is deliberately careful — the effects sit on "a weak level of evidence", and so many studies use nature views that the field may be overrating them.
Offices got tested too. Kweon, Ulrich and colleagues put 210 students through four deliberately annoying computer tasks in rooms hung with nature paintings, abstract paintings, or nothing. More nature on the walls meant less anger, and the route was lower stress. Though, to be fair, the effect reached significance for men and not for women.
Botanical Prints and the Maths Hiding in a Fern
Look closely at a fern and you'll see the same shape repeated at smaller and smaller sizes. That's a fractal, and it turns out our eyes have opinions about them.
Richard Taylor's group measured what people prefer, and preference peaks at a fractal dimension of about 1.3 to 1.5 — mid-range complexity, on a scale where 1.1 is sparse and 1.9 is dense. Skin conductance told the same story: a mental task produced the smallest rise in stress while people looked at a pattern of around 1.4. Brain readings showed the biggest frontal alpha response, the relaxed-but-awake signal, at about 1.3.
Taylor calls these preliminary experiments, and he's right to. But the practical read is clear enough. Neither a bare twig nor a wall of undergrowth. Something in between.
Interior stylist Charlotte Boyd makes the same point from the other direction, suggesting botanical designs on a cream or off-white ground, less densely drawn, so they don't overpower a room you sit in all day.
Landscapes: Somewhere Far Away for Your Eyes to Go
Depth is the working ingredient here, more than the subject.
Attention restoration theory calls it extent — a scene needs enough scope that your mind can wander into it instead of taking it all in at a glance. Ulrich's effective hospital image gets described the same way every time: water, trees, and high visual depth. Not a pretty view. A deep one.
Be wary of anyone claiming one landscape suits everybody, though. The savannah idea has partial support — 80 African students preferred savannah scenes despite living somewhere quite unlike one. But when 274 college students rated six different biomes, tundra and coniferous forest came out on top. So much for one universal landscape.
What does show up repeatedly is a preference for texturally complex natural views over urban ones. In practice that means a scene with a middle distance — a valley floor, a treeline, a track heading off somewhere — rather than a flat wash of colour. Wide, panoramic shapes suit this well, because they give the eye room to travel.
Water: The Motif That Holds Attention Longest
If one motif has the strongest evidence behind it, it's water. And the study that made the case used pictures, which matters enormously here.
In 1981, Ulrich showed people sixty colour slides split into three sets: nature with water, nature dominated by greenery, and urban scenes with neither. Alpha brain activity ran higher for the nature slides than the urban ones. Emotional states shifted more positively for nature, and especially for water. Best of all, water held attention and interest more effectively than anything else on show.
Slides. Not a lake. Images of water did that.
The pull seems stubborn, too. In one study of 68 adults, water views were preferred whether the rest of the picture showed countryside or buildings. Among cancer patients rating photographs, a lake sunset topped the list at 76%.
Meanwhile the University of Exeter's BlueHealth project has been building virtual water — 360-degree video shot in Cornwall — precisely for people who can't reach the real thing.
No Window At All? This Is Where Art Earns Its Keep
Basement rooms. Internal offices. The box room with a wall where the window should be. This is the case where art stops being decoration and starts doing a job.
The move isn't to hang one enormous forest and hope. Kellert's Indirect Experience group holds eight elements you can bring in without a window — images, materials, texture, colour, shapes and forms, information richness, natural geometries and biomimicry. Stacking several of them is closer to how the discipline actually works. A botanical print, a wood frame, a linen-textured mount, a stone or ceramic object on the shelf below. Four nature references instead of one.
And be honest with yourself about the ceiling on this. The plasma screen study is the warning: a mediated view didn't reproduce what a real one did. Art isn't daylight and won't pretend to be.
The University of Derby's nature connectedness researchers put the aim simply — collect artwork that captures nature's beauty and wonder, and how it makes you feel.
Questions People Ask About Nature-Inspired Office Art
Three things come up almost every time someone starts choosing.
Does a painting work as well as a photograph?
Probably, based on what's been measured. The hospital research generally groups nature photographs together with figurative art rather than treating them separately, and preference studies report people favouring both. Two studies found no style preference at all. I couldn't find a proper head-to-head test of paint against photograph, so anyone stating one beats the other is guessing.
How big does it need to be, and how many?
Smaller than you'd think, going by the evidence. Berman's participants shifted a memory score after images shown for about seven seconds apiece. That was a controlled lab test, not a room, so don't over-read it — but the takeaway is that the piece needs to be within easy glancing distance of where you work, not filling a wall.
Won't I stop noticing it after a month?
Some habituation is inevitable. What's interesting is that water and greenery kept holding attention in Ulrich's slide study where urban scenes didn't. Detailed, layered scenes give you something new to find. Flat graphic ones give it all up on day one.
Start With One Wall and See What Sticks
So where does that leave you? Somewhere modest, I think, and that's fine.
The evidence says nature imagery does something real — attention, anxiety, mood, anger — and it says that something is smaller and less certain than what an actual window does. The reviewers themselves call it a weak level of evidence, and they're the people most invested in it being strong. That's worth respecting.
But Kellert never framed any of this as a performance upgrade. He wrote about a craving for aesthetic, intellectual and even spiritual satisfaction — a need, not a productivity lever.
So pick the scene you actually react to. Test one wall, the one in your eyeline while you work, and give it a few weeks. A botanical study if you want quiet detail. A deep landscape if your eyes need somewhere to travel. A seascape or a still lake if water is the thing that settles you.
Then see whether you still like looking at it. That's the honest test.
