Excercis...

Or some kind of sport? I've heard of it, I think. They use the city as a training ground... Parcoure, I think it can be.
They were 'going' on hands and feet up and down the stairs - I don't know if you can see it? Didn't have my camera with me, only the iPhone, so this was all I got.
I've been to a really nice and interesting book circle meeting today. We all pretty much had the same opinion about the book 'Aleph' by Coelho. A few disagreements that made for a really interesting discussion. :)