| We say LE château (not LA château) and as mentionned befor it's in Versailles, not in Paris.
For La ___ Saint-Denis it's tricky, it's not in Paris neither but it's confusing with la basilique Saint-Denis where most of the French monarchs are buried.
I could add La Grande Arche that is not exactly in Paris but in this case it's bordering Paris so it's almost like if it was in Paris |