I took one of the Thames River tours up to Greenwich with the intention of going to the Observatory. Had I known how steep this hill was, I may have had serious second thoughts. As it turned out, it was deceptively easy to go up. I was really glad I went and saw the Observatory and the Museum. And then I had to get back down, and that was a different story. Well, first of all, I had no clue how to get back to the dock, so Google Maps to the rescue! I thought climbing down was way harder than climbing up. I was afraid I would fall on my butt and slide down the whole dang thing! All in all, though, I thoroughly enjoyed my time there. By the time I get back to London in 2020 (I hope) I'll be 70 and probably should not be climbing steep hills anymore!