Image Source: http://en.wikipedia.org/wiki/File:Carolands_Chateau.jpg
Carolands is a chateau style castle-like mansion located at 565 Remillard Drive in Hillsborough, California. It was built in 1914 for Harriet Pullman Carolan the daughter of millionaire George Pullman. Today Carolands remains a private residence. It would be a massive tourist attraction if it was ever opened to the public.