I have a love for green roofs, and today I was at work and saw this beautiful roof on the roof of an old stone barn. Don't pay attention to the asbestos sheets, but the plants look very happy, you can even see a lot of dried flower heads, so the plants must like it there. It looks mostly like sedum reflexum/rupestre with a bit of umbilical cord rupestris and a bit of ivy growing on a thick bed of moss. I'm thinking of throwing in some local compensation for sempervivum there if I ever pass by again.

The roof faces northeast and is shaded by an old sycamore tree most of the day. In the summer, it should be in a good spotty shade and, obviously, has survived this summer heat.