I've been twice in Meknes. It's a typical Moroccan town, with all their usual attractions from mosques to tombs, passing through the Medina, but without the strong character of other towns, like Fes and Marrakesh, or even Essaouira or Tangier.
Anyway, its location makes it an almost mandatory passing point, and, since you are there, you better reserve one day to visit it, without regrets.
Moulay Ismail Mausoleum
One the most beautiful places in Meknes is this tomb, where the king that built the town and turned it into a imperial city was buried. Until Lisbon's earthquake that seriously damaged the city, Meknes was Morocco's capital.
It's forbidden to take pictures of the tomb, so we had to photograph... the walls. Pretty, anyway!