New windows can insulate better than most walls, and some can even survive being hit with a two-by-four shot from a cannon.

Breaking a pane of glass in half is easy – just score it, break it, and after practicing a few times, you’ll eventually get it right. What about cuts that are impossible with a normal glass ...

It took about 100,000 hours to install all the glass panels, and the tower's façade now includes a total of 4,677 of them.