One Pot, Two Lives | a planter and a fishtank in one to promote a beautiful example of simbiotic living. While the fish's waste provides nutrients for the plant, the plant filters the water that it is fed to provide clean water for the fish. Genius!
A few key features: open air cat walks, climbing steps, cat doors in every door, deck built in to the window, extra space in the bathroom designed for their compartment, cat room hidden under the stairs, special fencing to prevent cats from getting away. Apart from these, there has been use of cat friendly construction materials as well.