Exterior diameter is 16 inches, interior is 14 inches at its widest point. My husband says when he put this together it was not possible to put the crow's nest on top - it had to go one level down, with the platform on top.
answered 4 months ago
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About a foot around; it's large enough for our two cats to be perched together (snugly, but they don't fall) and each one will take turns napping comfortably, curled but not squeezed into the space.
answered 3 years, 5 months ago
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