In subsequent years, American shopping centres would keep getting bigger and bigger. The King of Prussia Mall in Pennsylvania opened in 1962 as a modest open-air complex, but grew rapidly, adding major stores like JCPenney, Gimbels and Woolworth’s along with a 1,400-seat cinema. By the end of the decade, it spread over one million square feet (92,903sqm), housed over 100 stores and had parking for 27,000 cars, making it the largest shopping centre in the east. Today, with more than 450 stores, it's even bigger, welcoming 22 million visitors every year.