This boomerang-shaped fireplace is the EcoSmart Zeta, which, appropriately enough, comes from Australia. It’s designed by John Dimopoulos, the director of Geoform, Design & Architects Firm in Sydney, and is a flue-free fireplace that is fueled by denatured ethanol.

Unlike most traditional fireplaces, the EcoSmart Zeta hardly requires any maintenance and burns cleanly using a renewable modern energy source.