May one say Asher Yatzar facing a bathroom if the door of the bathroom is open and you can see in?
Thank you for your question.
There are different opinions about this. According to R’ Moshe Feinstein zt”l it is permitted, however he says that it is preferable that a shul be built in a way that those davening won’t see inside the bathroom while they daven. Others say that one should preferable not say a bracha when he can see inside, and if the person closes his eyes when saying the bracha it is permitted.
Igros Moshe Y:D 1-114, Vzos Habracha chap. 16-8 quoting R’ Eliyashiv and R’ M. Eliyahu zt”l, also see ftnt. 2.