That tower is terrifying. If you have even a hint of acrophobia, do not go out onto the walkway.
My memory is that it's 1 ft wide, made of grilling, and has a barely waist-high railing. Once you go out, you have to shuffle around the full circumference, because they keep sending person, after person, after person after you, and it's literally impossible to pass someone and go back. It seems barely possible that that rickety platform can hold the crowd of people they let out at a time.
The most utterly terrifying experience I've ever had, in my life, including my military experience. Including the top of Notre Dame (god rest her soul). Including fair rides, roller coasters, including any Space Needle-like structure.
Terrifying. I have no other words.