For the non-Muslim, Mecca is the most forbidden of Holy Cities--and yet, in many ways it is the best known. Muslim historians and geographers have studied it, and countless pilgrims and travelers--many of them European Christians in disguise--have left behind lively and well-publicized accounts of life in Mecca and its associated shrine-city of Medina, where the Prophet lies buried. The stories of all these figures, holy men and heathens alike, come...