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 benefit is connected to the balance and harmony included in tiger eye meaning. Tiger eye is the chosen gemstone of the Dalai Lama's personal mala. It is believed to be a strong power stone, in keeping with tiger eye meaning. How to use tiger eye: Hold a tiger eye gemstone or worry stone while praying or meditating.