Keukenhof, situated in Lisse, Netherlands, also known as the Garden of Europe, is the world's largest flower garden. Keukenhof is open from the last week of March to mid-May. The flower garden was the idea in 1949 by the then-mayor of Lisse, a small town south of Amsterdam. The idea was to have a flower exhibit where growers from all over the Netherlands and Europe could show off their hybrids. Keukenhof has been the world's largest flower garden that runs throughout spring for over fifty years. The best time to view the tulips is around mid-April, depending on the weather. It is located between the towns of Hillegom and Lisse, south of Haarlem in South Holland, southwest of Amsterdam, and is accessible by bus and rail.