This via The Register in the U.K..
Those of who you who get a bit wobbly at the top of a stepladder are strongly advised to look away now, because here's a helmetcam vid of just how you get to work when your office is at the top of a 1,768ft TV mast:
What I find amazing is that every time you leave one section, the hand- and footholds become less and less substantial looking.
Then you have to do the work.
Then you have to climb down.