Is There a Flagship Store in Japan?

i mong i mon t show my ignorance here, so let me see if i can tepose this question correctly. Pilot has a few stores across japan by far. The largest one is the flagship store in the ginsa and tokyo,. And this is a 12 story building all about stationery sso there's one floor dedicated to a letter writing. There's one floor about fountain pens and ink. One floor about planners, especially, like system planers, like a plotter. So is its a huge shop? Well, and i would spend the entire day there if i was a visitor. But im assuming living there, you kind of, you know,