In one sense I was disappointed, because the Old City is not especially different from various other ancient places I've been. I have to remind myself of its specific religious connotations. It's also hard to notice every detail because you have to pay attention to your footing, with all the steps and slippery stones in the drizzle.
After the tour I wandered some more. Actually, I wandered more than I'd planned to, due to my unfailing sense of direction. (Unfailingly wrong, that is.) When I finally escaped the Old City, I took the light rail up to Mount Herzl. Fortunately, the signs for Yad Vashem are good. I've done a certain amount of Holocaust tourism in the past (notably in Poland) but I still couldn't have brought along enough tissues.