Actually - and I may have said this before - I've already done or seen a lot of the things on the list (some things several times), and I just never photographed it or otherwise documented it. So I've been a bit slow in redoing them. And in doing some of the new things...But I finally got a picture of myself with this one (actually over the summer, as you can see by the fact that I'm wearing shorts in the picture), the stone marker for kilometer zero in the Plaza del Sol, which I've for sure walked by countless times.
Kilometer zero is the central point of the road network in Spain. (Not to be confused with the central geographic point on the Iberian Peninsula, which is at Cerro de los Angeles, several kilometers south of Madrid.) It's really not all that special...but I suppose that since Sol is basically the unofficial center of Madrid, it's important to have been there. (Although I think it's impossible to visit Madrid or to live here without ever passing through it.)
So, not super exciting, but number 30 is done!
