Amenemhet 3's pyramid is one of the few you can climb with permission from the local guards. Have a few pounds worth of baksheesh ready when you come down, though. The view from the top is as sweet as it gets, with wide green fields and canals distributing water from the Nile. I have never really gotten a good answer from anyone, but I believe that at least parts of the mounded field in front of the pyramid is the famous but lost Labyrinth.
