Take a Walk On the Bâtiment


Unless you’re Spiderman, hanging off  the side of a building can be rather exhausting and crawling or walking along its facade are even more impossible. Fortunately, for all those wannabe superheroes, artist Leandro Erlich has developed a system that allows you to see what you would look like as a gravity-defying, building-climbing comic book character.

To do so, he created Bâtiment, a massive building facade planted firmly on the ground with a giant mirror sitting at a 90 degree angle from the bottom of the building.

The end result is a building that people can not only climb, sit or stand on, but one where they can watch themselves do these things.

Of course, just as amusing as the artwork itself is seeing the reactions of the people interacting with it. While some people admire their superhero selves, others try to set up more realistic scenes where they dangle from the windows. Even as dozens of people play on the building, others stride briskly over it without ever looking up, apparently uninterested in how they look walking across the side of a building.

The exhibit where the installation was shown has been over since March, so it will be interesting to see if Erlich will end up setting up his creation somewhere else or if that was the only place and time people could interact with the piece.

  • jon

    I think it’s more likely at 45 degrees

    • Shashi


    • Jackson

      I was thinking the same thing. It would have to be 45 degrees. At 90 degrees they would only be able to see the rafters.

  • Jared

    Took me a minute to figure out what was going on..
    I like it =)

  • Adam

    The angle of the mirror is 45 degrees, not 90!

  • Mr. Physics

    Ummm. That’s not a 90 degree angle, but instead a 45 degree angle, so that the reflection appears at 90 degrees!

    (Things a physics teacher notices)

  • ian

    The mirror would have to be set at 45 degree angle, not 90, to create the illusion. Look closely at the photos and you can also see that the mirror is slanted at 45 degrees, not vertical at 90 degrees.

  • Praidex


  • Ingrid

    That. Is. Awesome.

  • 2NE1

    omg where is this i wanna go there

  • amold

    Is the mirror at 90 degrees or 45 degrees ?

  • Synco

    Nice full scale illusion. Leandro should solve some small imperfections like the deformation and seams in the image caused by the mirror. Also “create” a sky arround the house instead of the reflection of the ground.

  • I think the mirror is at 45° rather than 90°.

  • Ben

    Don’t think that’s a 90 degree angle btw mirror and the building on ground. A 45 degree angle more likely.

  • Looks like a lot of fun, actually.

  • Ed Hopkins


  • Kristy

    not really an optical illusion but kinda cool all the same.

  • rhubarb


  • Watcher

    To get the illusion of the 90 degree attachment the mirror would need to be more at about a 70 degree angle with the building image. Otherwise you would see the plaza behind the photographer and not the building.

  • AmetuerAspirant

    this actually gave me a bit of vertigo, looking up at the window in the first panel, i almost thought the cameraman was on the top of a building.

  • Ehm, that is 45 degrees, not 90. The mirrored wall seems to be at 90 degrees, the mirror is right at the half angle.

  • Paul Raines

    Very cool!!!

  • Care Bear

    Some things simply defy description.

  • owen

    SO COOL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  • Rick

    haha .. that’s kick butt & rather ingenious.

  • Nina B


  • erin8ball

    i am guessing thier is a camra look down on them some where. looks fun!

    • erin8ball

      sorry i mean there and looking

  • Geo

    A missed opportunity to create something great. Couldn’t he align the mirror pieces? I mean, if you are goind to do something like that, do it right.

  • eee efff geee

    I love this one!

  • clues

    That’s so cool! I want to do something like that.

  • Charles

    I would believe:”a giant mirror sitting at a 45 degree angle from the bottom of the building.” Not 90 degrees!

  • Jigille

    super cool!

    Love This Site!!!

  • I wonder where Erlich got a mirror that big?

  • brian

    thats 45

  • diane

    Cool I like it.
    but all the posters complaining about the Degree Get a life ;-)

  • Young Arrow

    Not bad, rather a clever idea!

  • ydiss

    As no one has mentioned this before me, I’d like to state the mirror is at a 45 degree angle, not 90


  • Ryan

    Very impressive o_O

  • chris

    omg how many peeps going to say the angle of the mirror is 45 not 90 ? IS this a forum for parrots here ? LOL

  • hockeyplayah

    Where is this? It looks like SO much fun!!

  • banti

    ya it should be 45 degree and i think those in it would never see themselves the total illusion will only be visible for where the pic is taken the will only see the photographer.

  • Juan L.R.S.

    It’s Awesome….\(゚▽^*)/

  • Maakus

    When i will be there, i´ll take a pic of it, ´cause i´m loving it.

  • Jim

    I think the mirror is at 45 degrees.

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