Because humans don’t have the monopoly of good taste, the Los Angeles-based Fixnation association has asked several California architecture and design studios to use their skills for a good cause. The idea ? Design trendy and ingenious cat trees, made from noble materials or designed to preserve the environment. These resolutely modern and stylish structures were then auctioned off to raise funds to enable homeless animals to be rescued. A great initiative immortalized by photographer Meghan Bob.