Look at that ring. That is our home, where animals have lived, are living, and will live their lives. All of our joy and suffering, millions of meme were born there.

Every hero and traitor, every creator and destroyer, every ruler and peasant, every couple who love and hate each other, every hopeful and despairing family, every philanthropist and every politicia, every famous artist and nameless drones, every saint and sinner in the history of our civilization, dwells there, on the thin frail orbital that floats in the void.

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It took a while for the denizens of Theriotopia before they realize they live in a Banks Orbital. It took them even more whiles for them to learn that this isn't normal. Matters normally clump into spheres, not torus. In the end, they figured out that their habitat requires an extremely advanced technology to build

The first two paragraph is adapted from Carl Sagan's Pale Blue Dot remark.