The history of Keukenhof dates back to the 15th century. Countess Jacoba van Beieren [Jacqueline of Bavaria] (1401-1436) gathered fruit and vegetables from the Keukenduin [kitchen dunes] for the kitchen of Teylingen Castle. Keukenhof Castle was built in 1641 and the estate grew to encompass an area of over 200 hectares.Landscape architects Jan David Zocher and his son Louis Paul Zocher, who also designed Amsterdam's Vondelpark, redesigned the castle gardens in 1857. That park, in the English landscape style, still constitutes the basis of Keukenhof.In 1949 a group of 20 leading flower bulb growers and exporters came up with the plan to use the estate to exhibit spring-flowering bulbs, signalling the birth of Keukenhof as a spring park. The park opened its gates to the public in 1950 and was an instant success, with 236,000 visitors in the first year alone. 2019 will be the 70th edition of Keukenhof, with Flower Power as its theme. During the past 69 years Keukenhof has developed into a world-famous attraction.