Not technically a castle, but it's largely what folks call the ranch-turned-state
park of the publishing mogul William
Randolph Hearst. The estate once stood at 240,000 acres, and while
the buildings were an on-going project that never saw a completion (even
after Hearst's death), construction has since ceased, and the hilltop
mansion is now a preserved state park.
Once you go inside into the main building (as a guest), you would
arrive in the large sitting room.
After drinks in the sitting room (one or two each, tops), you'd
be led into the dining room.
Dinner would be over after a few hours, and from there you may relax
in the game room...
... or take in a movie. (For the tour, you see collection of home
movies taken at the estate.)
There are tennis courts for the sports-minding, but the courts serve
the dual purpose of being...
... the roof over the indoor swimming pool, complete with a dark
bottom and gold accents.