How the Mirrorcube disappears into the forest
At Sweden’s Treehotel near Harads, the Mirrorcube’s camouflage comes from a simple optical trick: its exterior mirrors the trees, sky, and shifting light around it. The roughly cube-shaped room is held among the pines, where its reflective walls break up its outline instead of presenting a familiar building face. The effect changes with the weather and viewpoint; from one angle, the cube can seem to dissolve into the canopy, while from another its edges become clear.
That reflection creates a hazard for birds. A pane that looks like open forest to a person can look like a clear flight path to a bird, which may strike the glass. The Mirrorcube’s glazing uses a patterned ultraviolet film to make the surface detectable to birds. Many birds can see ultraviolet wavelengths that people cannot, so the pattern can signal “solid surface” without becoming an obvious decoration to human visitors. It is often described loosely as an invisible coating, but the relevant light is ultraviolet, not infrared.
A room built around its setting
The cube’s design depends on a tension: it must be visually elusive from outside yet function as a usable room inside. Its lightweight frame is supported among the trees, while the reflective skin gives the structure its forest-like appearance. Guests enter by a bridge, then look out through windows that reverse the experience: the forest is no longer a reflection hiding the room, but the view surrounding it.
That dual effect is what makes the Mirrorcube more than a novelty. Its camouflage is not just an aesthetic finish; it shapes how the building meets the landscape and forces the designers to account for wildlife as well as visitors. The same glass that helps the room vanish to human eyes has to announce its presence to birds.
