Depends on who you ask... by definition it's correct to call it a public bathroom. Looked up a few online dictionaries including Merriam Webster and dictionary.com. #2 listing for both was either lavatory or toiletI know I posted this a while ago but am surprised no one commented on it. There are no restrooms in Liberty Square.
And if you want to get technical; There are no public bathrooms in any of the parks. There are however, restrooms.