Some of the pictures really do something to the mind and there IS a feeling of vertigo indeed!! It is amazing to notice what a two dimensional picture also can do to your mind.
Good pictures, but dangerous. Very dangerous for the photographer, and somewhat dangerous for us.
While all of them look scary, I though that the photographer was tempting her fate big time in a some of them, particularly the last two - the one in Italy and the last one in Hongkong. It doesn't look like she is tied to a harness or anything but she is sitting right on the edge. Takes guts.