In my opinion, wall mounted mirrors are the most overlooked item during the budget phase of building. Primarily, the reason for this is one needs to think about how to design the home before it’s even built. Start looking at your house plans now and imagine where you could build a mirror right into the wall. Possibly you want an extraordinarily large mirror to hang over your bathroom vanity instead of the traditional medicine cabinet. These are pricey items and if you do not plan them into the budget, you may lose the opportunity to have them when your home is being finished.
The two mirrors to the left are placed to look like decorative windows. Interiorish has a list of 10 ways to use mirrors in design.