In The Middle Ages the area was filled with watch towers and castles as part of the Matildic defence system. Nowadays brick is replaced by wood and these watch towers have sprung up everywhere. The area is a nature reserve and I suppose they are there to count deer, pheasants and boar.
And another project, I'm such a lucky girl! I'd been looking for one of these sidewards knitted jumpers for ages so when Sylv. sent me a pattern from UK I couldn't wait to get started.