Based in Australia, this company has built its name creating fireplaces that are both beautiful and ecologically sound. The freestanding, vent-free models are not only elegant furniture pieces, but they’re also easy on the environment: Each is powered by bio-ethanol, a renewable liquid fuel produced from agricultural byproducts, that burns clean and generates no smoke. And they’re efficient, too: Since they don’t need a flue or chimney, all the heat produced during combustion stays in the room.