'Kingdom of the Planet of the Apes' reigns at the box office with $56.5 million opening

This image released by 20th Century Studios shows Freya Allan in a scene from "Kingdom of the Planet of the Apes."

"Kingdom of the Planet of the Apes" reigned over the weekend box office with a $56.5 million North American opening, according to studio estimates Sunday, giving a needed surge to an uncertain season in theaters.