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British Museum Great Court Ceiling
(feddit.uk)
No architecture-specific rules, just don't be a jerk, your normal stuff.
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I was interested too so I had a look. It was designed in 1823. The building was completed in 1852. https://architectuul.com/architecture/british-museum
Thanks for the link - very interesting reading the history of the museum's architecture. This glass covered courtyard is much more recent addition as it was finished in 2000.
I love this kind of architecture. I always feel like George Costanza though when commenting on it..