I don't know where it is currently, but according to this 2008 article it was on a world tour at that time. https://phys.org/news/2008-07-james-webb-space-tele

I don't know where it is currently, but according to this 2008 article it was on a world tour at that time. https://phys.org/news/2008-07-james-webb-space-telescope-full-scale.html https://phys.org/news/2008-07-james-webb-space-telescope-ful...