These freestanding, vent-free fireplaces are sculptural and beautiful — but, just as importantly, they’re also ecologically sound. Powered by bio-ethanol (a renewable liquid fuel produced from agricultural byproducts), these fireplaces burn clean and don’t generate smoke — no chimney is necessary, and the heat stays in the room. Looking to finish your outdoor space? Zuo's clean, contemporary furnishings are the perfect complement to the sleek fireplaces.