State Property, Forbidden Palace, and Versailles

[Immaculate]

Do the forbidden palace and Versailles do anything while you are in the 'state property' civic?

I.

 

[UncleJJ]

Do the forbidden palace and Versailles do anything while you are in the 'state property' civic?

I.

They give culture and GPPs. But they don't affect the maintenance costs in nearby cities which I guess was what your question was aimed at.