For Izzy, it's a great place to tie because he has learned to stand patiently at a trailer and eat. Every square inch of the back of that trailer serves a purpose. I can leave either horse there for as long as I need to, and I know they're safe.
The mounting block usually holds my grooming bucket, but it's also convenient for when I need to stand on it for braiding, clipping bridle paths, or medicating goopy eyes. We have a three-step mounting block in the arena, so this one just serves the barn.
The ranch owner had the wheel cover built to protect the tires from sun, but it was also designed to protect the horses in the event that someone decides to throw an impromptu temper tantrum.
Probably best of all is that there are lights for outside and an electrical outlet for running my clippers. I keep a short extension cord with my clippers which gives me plenty of room. In all my years of owning horses, this is only the second time I've had an electrical outlet that didn't require 12 miles of extension cords. That and the wood chips have me boarding here for life.