The first BURGER KING® restaurant opened its doors in 1954 in Miami, USA. The WHOPPER® Sandwich was invented a whole three years later in 1957, costing just 37 cents. In 1963, the first restaurant outside of the US was opened in Puerto Rico. In 1969, the first sites were added in Canada, and in 1975, the opening of the BURGER KING® restaurant in Madrid heralded the leap to Europe.