From the Federal perspective (the National Register of Historic Places is part of the National Park Service), a property owner can do whatever they want with their property as long as there are no Federal monies attached to the property.
I think you probably mean the metaphor of piercing eyes, it means someone who has a really intense look in their eyes. Sometimes it could be that the colour of their eyes is quite different, like a really icy blue colour. piercing eyes are eyes that can see straight through a person. SUPP is right.
This phrase is used to describe something that someone will like. To please the eye means that the person likes what they see.he meaning of the eye simply is protection, it was a popular symbol to the egyptians representing Horus and his protection. Although people do have their own weird thoughts and beliefs, it is not a bad symbol. They probably do not know the history or story behind that exotic eye.