Once on top you can see the ruins of Herod's once-magnificent palace, the ramp that sealed the Zealots' fate, and, way down below, the sketchy remains of the Roman siege camps.
You can see the ruins of Herod's palace from the top of this site.
Of course one has to treat him as usual, but, hang it all, one's gorge does rise at sitting down to eat with a possible murderer!" Poirot nodded sympathetically.