The stairway leading up to the Knight's Tower. At 45 metres off the forest floor, it's the tallest part of the Fly and well worth the climb if you can manage it.

And whose shoes? (Or more precisely, parts of some shoes.) Well, that's a pleasant memory just for me.

Addendum: My personal opinion is that Facebook is a sociopathic organisation that steals other peoples' intellectual property (including the images in this gallery) despite being explicitly denied permission to do so.