Speaking of which... I wonder what the largest piece of vision glass is these days. I'm sure it's on some office lobby somewhere and I'm guessing it's in the range of 8 feet by 30 feet. I have searched online for the answer, but I can't find it anywhere. I'll probably be surprised by the answer.
Better yet, now that we live in the future (minus the flying cars, which I'm still waiting for!) we will soon have nanotechnology glass, which will be "grown" on site and be seamless from the first floor to the one hundredth.