If any of you do make it to the Netherlands, in addition to the "Het Keukenhof" , that Lut mentioned, be sure to see the Aalsmeer Flower Auction. It is the largest flower auction in the world. The auction building is the third largest building in the world, in terms of floorspace, 10.6 million sq ft. Flowers from all over the world are traded on a daily basis at the Aalsmeer facilities. Around 20 million flowers are sold daily with a 10% increase around special days such as valentines day and Mothers day.


http://www.youtube.com/watch?v=V2CK2TatM_U