We bought our house from a guy who had the opportunity to rebuild after he lost his house to a chimney fire. He decided that he had enough of living in the dark and he installed very large mirrors throughout the house. They both make the place look a lot larger, and more importantly reflect light back into the room very well. They can be confusing. Pretty much every dog or cat we own has freaked out when they're first adopted. Come to think of it, a few guests have too!