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.
A nose bridge piercing is a horizontal bar through the skin on the bridge of the nose (the area between the eyes). It is sometimes referred to as âErlâ or âEarlâ piercing, terms derived from the name of the first person to have this type of piercing, Erl van Aken.