One of my favorites by Diller Scofidio.
[My favorite is the Vice Chair[?] but I couldnt find a photo of it online].

This is the "Guillotine Breakfast Nook" by Tom Sachs [my favorite of his works].

where are we supposed to be seen?

In response to Adi's post: I can also think of Robert Smithson, Rachel Whitereade and Richard Serra on the landscape/architecture threshold.

Marc: are we gearing more towards a phenomenological armature? or one that directly assess the operands of the joke?

i can think of 3 structures for one joke, but not one structure for each joke...