There are things that are visually pleasing, nearly universally, and that would be true even if viewing them was new to you. Sunsets where everything lights up spectacularly come to mind.
Ugly is a tougher word, because it’s an opinion. But visually jarring things would still be unsettling on some level.
By the time you need someone to tell you what’s ugly and beautiful, you’re slicing things really thin.
I think if you were seeing for the first time, the things that would jump out compared to an average adult would be all the beautiful things we take for granted because they’re so common. All the lights and shiny objects by the millions that we’re surrounded by all day.
Someone seeing those for the first time would probably find more beauty than we do.