In the north Leiden borders the Bollenstreek. In spring the splendours of the Keukenhof and the tulip fields in bloom can be enjoyed in the vicinity of Lisse and Hillegom. Each year at the end of April, the Bollenstreek Flower Parade draws thousands of visitors from across the world. A lovely boat ride over the canals of Leiden can take you to the Kagerplassen lakes near Warmond, the Braassemer lake or the Bollenstreek.