To the best of my knowledge the Falowiec - which roughly translates as The Wave, and you can see why - is the longest continuous concrete block in Poland. Perhaps in the world. When we were in Gdańsk a couple of years ago, Emma's old Polish teacher took us on a detour to take in its awesome size. Its size, let me tell you, is awesome. For reasons not entirely clear to me, I had something like an epiphany when I saw a photo of Julita Wójcik's knitted version in this week's Newsweek. (Some photos of Julita wearing a traffic-light apron here.) I'm very pleased that her handiwork is going to be part of an exhibition about concrete and I look forward to admiring the Falowiec in the flesh. Or should that be in the stitch?