A photograph of a tank boarding a ship on D-Day is replicated in wool art — one of 80 displays, each one metre in length, that make up the 3D installation The Longest Yarn, which is due to be on display in Southwell Minster from 9 to 27 September, and was shown in Normandy last month. More than 1000 knitters from around the world have contributed. Entry to the exhibition will be free of charge. thelongestyarn.com