From a train we saw a public sculpture in Gateshead (Tyne & Wear) made entirely out of supermarket trolleys. It was amazing - something I had never dreamed of and, if I had, would have dismissed as an oddity just as the now famous Angel of the North was derided when it was first erected. It is now a renowned around the world. I did not like it at first but now that it has become a local landmark and has aged a bit it is really something special.
Things you find stressful that other people don't notice.