Indoor - Outdoor
The idea of 'indoor gardens' (eg in conservatories and windows) implies the idea of 'outdoor gardens') and there is much to be said for the idea of 'indoor-outdoor' gardens which link both ideas.
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Lions fountain at the Alhambra
The Court of Lions at the Alhambra is a famous example of an indoor-outdoor space - with a water feature as the focus of both spaces.