Hmmm... the most dangerous thing...
Had to be when I was much younger - and more foolish than I am now... last century...
I worked at a radio station - 'transmitter watch' - is what they called it. Pretty dull... I had to monitor the meters and log the readings every two hours or so.
There was a fella that they had hired to repaint the towers (we had a 5 tower array), Aviation Orange and White.
The fella was a bit of a character, which fit with the type of job that he had - painting towers (or replacing the bulbs) from hundreds of feet up.
I asked him one morning after I got off work "What's it like from way up there?"
He stammered and stuttered for a bit, and then replied, "You wanna go up and see?"
"Sure!", I replied.
He gave me basic directions on how to climb - not to release one grip until the other was firmly grasped... we would climb up two-thirds of the tower inside, and then have to 'swing out' to the outside to finish the climb... etc.
I went up with him all the way to the top where I got out my camera and I took pictures - of the surrounding scenery, and then I took a picture of him and he took a picture of me.
The tower was 415 feet tall. It gently swayed in the breeze - guyed securely to the ground.
Afterwards, I climbed back down to the ground.
I would NEVER do anything like that again.
Regards,
Jim TX