Remember that we have to meet Nelly at the turnstiles at six.

So too it is the Syed and the prayers he breathes which exorcise the spirit of hysteria that so often lays hold of young maidens; and it is likewise the prayer-laden breath of the devout man which fortifies the souls of them that have journeyed unto the turnstiles of Night.

It increases as you pass through the Ferry Building, the turnstile behind the Golden Gate, whose blithe tower of the four clock dials is reminiscent of the Giralda in Seville.