Cats enjoy watching fish. People enjoy watching cats and fish. What more obvious solution than a glass container system (‘Russian doll fishbowl’) which would allow all to enjoy each other.

The tiered watchers could become an entertaining spectacle for passers-by, and with homes becoming increasingly unaffordable in urban areas, a discount could be offered for these fascinating ‘glass’ apartments.

A final bowl could be added to incorporate the rest of the world.