In modern homes, it is unlikely to be possible due to space limitations, though traditionally, fireplaces were considered to be the perfect central element to the living room! But it's important to remember that the aim of your living room is usually to be inviting to people, for getting them to feel comfortable and relaxed, and stimulate good conversation. So even without a central fireplace, making the fireplace some sort of center of attention will also work well. Mirrors are a wonderful tool to enhance Feng Shui in a living room. They bring light into darker areas and can also reflect aspects of the space that visitors may well not otherwise enjoy. Mirrors make rooms look larger (and lighter) and very usefully, they can reflect the door, so any seating that cannot face the entranceway can still have the door visible through the use of mirrors. Yet again, we need to adapt this principle to modern cities and homes, even though the best placement for a mirror is when it can reflect an attractive view.