The Palace of Fine Arts in the Marina District of San Francisco, California is a building originally constructed for the 1915 Panama-Pacific Exposition. It was designed by Bernard Maybeck, who took his inspiration from Roman and Greek architecture. It was the only building from the Exposition not to be demolished, and in the 1960s it was entirely rebuilt to ensure its longevity. The exhibition hall, which originally housed Impressionist paintings during the Exposition, is now home to the Exploratorium, a state of the art interactive science museum.