A great time and a lot of history is brought your way. The signs are in various stages of restoration and offer a glimpse of the past. While I understand the need to be diligent about safety and unruly tourists.... they're almost militant about ensuring everyone stays in a group and together during the tour and nobody wanders from the path.
I thoroughly enjoyed myself, but be aware that if you take advantage of the student discount, they WILL ask you for a valid id.