That time I learned that the shells of the Sydney Opera House were made of tile....
Spent a few afternoons and evenings here, looking closely at the details, and admiring sunsets from the steps out front.
The history of the SOH is enthralling, tragic and hugely dramatic. The Peter Fitzsimons 'biography' of the SOH is a riveting read...
Regards the rules... every single tile is unique and the colour was painstakingly chosen to perfectly catch the harbour sunlight.
It's a tragic architectural masterpiece!
@Barebower I will have to check that out - thank you.