This is a picture I took way back in the day when I still travelled places. Have a gold "I've travelled a bit too" star if you know the name of the church this roof belongs to (and have skipped along it yourself). Take an extra star if you also know the year. Ha ha. (take two extra because that's quite a bit harder).
Snippets
Manholes Covers
Why are manhole covers mostly round? There is a very good reason and you'll smile when you know it.