Most of us see our homes as our own personal sanctuaries. Home is a place where you can let loose, be yourself, and walk around in your underwear whenever you please. But for people who live in glass houses, home is more like a fish tank. While some of these glass houses seem impractical for everyday living, others serve a very real purpose. Greenhouses are constructed of glass to harness the power of the sun for growing plants. Whether they are meant for people or for plants, these houses made of glass are visually stunning.