One Central Park in Sydney, Australia, incorporates two unique technologies: A hydroponic garden made up of 383 species that hugs the building’s exterior, and 42 heliostats, mirrors that passively direct solar energy away from apartment windows and onto shaded spaces. Notes the Council on Tall Buildings and Urban Habitat: “The project presages a future in which biomimicry is no longer a radical concept in architecture.” An efficient power plant also reduces the tower’s energy consumption by 25 percent compared to a similar size conventional building.