Gallery: 4TREEHOUSE by Lukasz Kos


What is it about tree houses that we love so much? Their playfulness, the escapism they offer, and the platforms they provide into nature all come to mind. We have written about the 4Treehouse by Lukasz Kos before, but when we saw it again in this month’s Dwell, the gorgeous glowing image stopped us in our tracks. Posing as a Japanese lantern on stilts, Kos’ creation floats within the fir trees on Lake Muskoka, Ontario, Canada.

What’s more, the design frames spectacular views of the forest, from inside, out, down and up!

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  1. 20 Awesome Treehouses T... March 4, 2015 at 9:57 am

    […] 4Tree House. This tree house concept gives it the appearance of floating among the fir trees in Lake Muskoka, Ontario, Canada. It is constructed on the base of four existing trees, which resembles stilts. There are three levels in total with varying transparency, letting natural light in and out as much as possible. […]

  2. Gravenhurst Chamber August 26, 2014 at 4:32 pm

    I am writing to see if you rent out the treehouse located on Lake Muskoka in Ontario. Please let us know at your earliest convenience.
    thank you.

  3. Jaisa Sulit December 19, 2013 at 10:55 pm

    is your treehouse available for rental?

  4. shogunsean May 16, 2011 at 3:08 am

    absolutely amazing!
    Anyone know of what species of fir tree is the treehouse built upon?

  5. talele July 21, 2008 at 3:19 pm

    thats cool

  6. 4TreeHouse By Lukasz Ko... March 17, 2008 at 10:57 pm

    […] Tree houses are buildings constructed among the branches or next to the trunk of one or more mature trees, and are raised above the ground. Tree houses can be built for recreation or permanent habitation. Generally, the term “tree fort” is used only for recreational structures and not permanent homes. In this post you can see the 8 of the most amazing tree houses ever built. The 4TreeHouse was designed by Lukasz Kos masters student at the University of Toronto’s School of Architecture & Design. Posing as a Japanese lantern on stilts, Kos’ creation floats within the fir trees on Lake Muskoka, Ontario, an elegant slatted structure that scales the trees and lets light radiate down it’s core. The project was an exercise in minimizing impact to the trees, site, and nature itself. A swing was suspended from the four trees, forming the structural foundation for the tree house. The result is a delicate balance between the slat wall enclosure and the swaying trees. The tall, tube-like structure allows for visitors to ascend up along with the trees. Lukasz Kos is a cofounder of Testroom, a Toronto-based architecture and design firm. – Via – Inhabitat […]

  7. crabbybaby March 17, 2008 at 6:30 pm

    i love this!! i live on acreage where this would be possible. all i need with this is a vine!! where tarzan, me jane!!

  8. Eva January 25, 2008 at 4:45 pm

    And what happens when one or more of the trees die?

  9. PiticStyle December 24, 2007 at 8:39 pm

    I love it!

  10. My Dream (tree)House &#... November 27, 2007 at 1:47 pm

    […] If I owned a slight bigger version of this I’d never leave. It could use an adjacent small pub connected by a swinging bridge. Then, perfection. (via Designer Daily News) […]

  11. Issa November 27, 2007 at 12:09 pm

    I saw this house in a magazine about a year ago. It’s actually suspended from the trees with big cables, and swings freely with the trees. It has a few anchors above and to the sides to keep it suspended and under control. It doesn’t stand on stilts, rather it hangs from fellow trees.

  12. The dream treehouse | D... November 26, 2007 at 6:05 pm

    […] this dream could be enjoyable even as an adult with this great treehouse by Lukasz Kos of Testroom. See more at Inhabitat. If you liked this post, tag it: Digg Furl Reddit Help or just subscribe to the RSS […]

  13. Incredibile casa sull&#... November 26, 2007 at 12:01 pm

    […] Incredibile casa sull’albero Inserito 26 Novembre, 2007 di Marco Di solito quando sento parlare di casa sull’albero mi vengono in mente le immagini delle casette costruite per i bambini negli USA. Qua, invece, ci troviamo di fronte ad una vera e propria abitazione. La casa, che assomiglia molto ad una lanterna giapponese, si trova su lago Muskoka nell’ Ontario ed è opera dell’architetto Lukasz Kos. Altre info e foto qui. […]

  14. chada November 26, 2007 at 10:01 am

    Nice,,,looking forward to own such one^^

  15. .:cambo:. broadcasting ... November 26, 2007 at 4:27 am

    […] Share: These icons link to social bookmarking sites where readers can share and discover new web pages. […]

  16. i <3 ( .Y. ) »... November 25, 2007 at 12:29 pm

    […] Freaking awesome tree house. […]

  17. 3-Story Tree House at H... November 25, 2007 at 11:00 am

    […] Read and see more @ Inhabitat. […]

  18. Random Linkage » ... November 25, 2007 at 8:17 am

    […] Dad never built anything like this for me – a three-level treehouse […]

  19. Irregular Mutt November 25, 2007 at 8:09 am

    Where do people come up with this stuff? I would love to be able to create something like that for the kids – time, money and imagination – brilliant stuff.

  20. Muggins November 25, 2007 at 12:27 am

    I have my doubts about the design of this house, whether it allows for the
    movement of trees in a strong wind. I lived 8 years in a tall forest in the
    coastal range of California and the tall tree trunks swayed in the wind.
    As they swayed, they reach a harmonic which seemed to increase the
    amplitude of their swing. Tree trunks close together did not sway in the
    same direction either, sometimes knocking against each other.

  21. subcorpus November 24, 2007 at 11:04 pm

    awesome …
    wish i could be there … seems like it’d be a lot of fun …

  22. Fronz November 24, 2007 at 9:31 pm

    Actually, I don’t think I’d like it. It’s too open for living or camp outs — with no solid walls the bugs would eat you alive at night I’m guessing.

  23. Charlie November 24, 2007 at 9:26 pm

    I LOVE IT! As has been stated numerous times above, but it doesn’t matter. I’m wondering what the view is out of that gigantic picture window in pic #5…

  24. Lukasz Kos November 1, 2007 at 2:01 am

    Thank you for all of the kind comments.

    Much appreciated!

    Lukasz Kos
    M.Arch, M.A., B. Env. D.

  25. Raphael D'Amato August 29, 2007 at 4:43 pm

    Cool! I’ve designed and built several treehouses ( and I find this really beautiful. A wonderful juxtaposition to the surroundings. But the first thing I thought of is how is movement addressed with this structure? Trees don’t often move in sync; so attachment is tricky and needs to be very flexible. Is there any info on this structure’s engineering? Would love to know how the floor (and entire structure for that matter) is not torn apart in a gusty wind.

  26. Garrett July 28, 2007 at 3:38 pm

    Cool post…it actually looks like something ewoks in Return of the Jedi would live in!

  27. Ricky April 24, 2007 at 1:55 pm

    This is soo amazing,

  28. Kaissa February 24, 2007 at 12:12 pm

    this is very beautiful but i can’t help wonder if the designer has left enough space around the tree trunks for future growth?

  29. naushad January 16, 2007 at 8:57 am



  30. Ray December 1, 2006 at 5:13 pm

    I love it! I’d love to live in a treehouse like that. Thanks for taking the time to post it. I just wonder if bugs would be a problem. With the trees INSIDE the living space. Or is it meant more for just part-time relaxing?

  31. S. Yuan November 16, 2006 at 3:50 pm

    i don’t really like it

  32. Geordie November 16, 2006 at 1:23 pm

    I just LOVE it!!

  33. John Bland October 23, 2006 at 7:51 pm

    We should all be living in these and give up our loveless fascination with modernist b.s. Regulations smegulations. I wish I could meet the brilliant person who created this because it has always been my dream to build liveable tree houses. I have some drawings and sketches he might be interested in for prototypes… ok to forward my email. Currently a student at Emily Carr.Thanks.

  34. maybe.later October 19, 2006 at 8:47 pm

    strong parallel visuals, but… gonna rot, though may not burn in Ontario. Also, the latticework will block sunlight, when the trees are already blocking sunlight.

    when thinking about this type concept, i’ve wonderd how to maintain attachment to living things (trees) without harming.

    in this structure, i also wonder about the red (interior) and bluish flooring materials.

  35. imagine September 29, 2006 at 2:13 am


  36. Adriean September 5, 2006 at 7:54 pm

    Love the simplicity of it. Doesn’t compete with it’s surroundings.

  37. urbandesignr September 4, 2006 at 9:21 am

    That would never got through the approvals process here in Australia, too small an asset protection zone from bushfire.

    But wow!

  38. sirocus September 1, 2006 at 5:32 pm

    O_O Nice!

  39. sherry son September 1, 2006 at 3:36 am

    that is so AMAZING!!!!
    what i would give to have the patience and talent to create something as magnufucent as that

  40. john September 1, 2006 at 4:50 am

    If only it was possible to experience that space first-hand.

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