There is something spooky yet appealing about exploring vaults and crypts. If this seems interesting to you, spend some time at Mausoleum of Sidi ben Aïssa.
Located in Meknes, this tomb site is worth a visit. But you'll find a great deal more to explore in the area. Bou Inania Medersa, Moulay Ismail University, and Bab el-Mansour aren't too far away from Mausoleum of Sidi ben Aïssa.