I think Feng Shui is the Chinese practice of placement and arrangement of space to achieve harmony with the environment and has and effect on health, wealth and personal relationship. It sonds interesting to make your home, where do you pass most time of the day, the best place to life. And it's just common sense, do everything natural.
But I don't know, directly, anyone who believes in it or any building that are designed according the Feng Shui. But I think there´s lot of people who use this discipline