The Hearst castle is called by its builder William R. Hearst a ranch. The people from California started to call it a castle when they first saw it. The interesting thing about Mr. Hearst who was a newspaper magnate is, that he collected everything. Even gothic ceilings. The castle is a perfect mix of European history, so I would say, its a must see for every American. What took in Europe hundreds of years, he and his architect build it in about 30.
Sorry that there are not more photos of the castle, but imagine something between Duomo in Milano and add some baroque, renaissance and mix it all together.