There's something mysterious yet compelling about seeing places of the dead. If this seems interesting to you, spend some time at Khanqah-Mausoleum of Farag Ibn Barquq.
You'll find this tomb site in Monshat Nasr. Once you've explored everything you want to at Khanqah-Mausoleum of Farag Ibn Barquq, head to nearby Egyptian Museum, Khan el-Khalili, and Cairo Tower.