A number of the bars in Seattle, including gay ones, used to have open trough urinals. Not sure if any still do. There was nothing separating you from the guy alongside you, it was like peeing in the open, you almost couldn't help but see the other guy's dick, and you certainly saw his piss stream.
There was also an events arena in San Antonio that had a concrete pissing wall in their mens room. A sheet of water ran down it, and guys would line up in a row and pee on it. Again, no hope of shielding yourself from glances.
And during Army field operations we used sunken 55-gallon drums, their tops at ground level, around which we peed. You were looking directly across at other guys with their dicks out, all standing out in the open air. Of course, we all showered together, too, which took the novelty out of seeing merely a dick poking through the fly of a uniform.
The concept of male privacy while peeing is an idea that hasn't been around that long in the US. Generations before us managed to piss with no privacy, I suppose it won't kill us now.
These metal troughs are like some sports stadiums had, such as Seattle's Kingdome. Except in the Kingdome they lined 3 walls of entire rooms, to handle the crowds. Startling what noise they made, like a heavy rain downpour on a tin roof, when guys were packed in there shoulder to shoulder. And women might be walking nearby, crashing the mens room to use the stalls, because the lines for the inadequate ladies rooms were too long. Meaning the men couldn't use the stalls themselves, Men simply weren't afforded much pee privacy; you either openly pissed in public or you pissed your pants.