Mount of OlivesAlso great. I didn't do a guided tour, but did it with a guide book. You can get them at the tourist information shop in the old city; they're a bit expensive, but they contain nice pictures and well...what's the point of going, if you don't know what you're looking at? There are a lot of different things to be seen and some of them have opening hours. So, if you don't go on a guided tour, it might be wise to read the guide book properly before going. For instance, there's this big church from which you have a great view, but it's only open 3 days a week.
These pics were taken from just outside one of the gates of the old city (can't remember which one)
This part of the mountain can be found on the panorama shot at the right