Well, If you come to Holland, may is a little late for our famous  tulipfields, but we had a cold winter (who hasn't?) so perhaps the flowers are late too.
But further we have a lot of culture to offer: van Gogh museum, Amsterdam with its canals, and of course Heineken beer.
But there are of course other european cities that are worth a visit: London, Paris, Rome, Barcelona (my favourite), Prague to mention a few.
London is the cheapest at the moment because of the low english pound, the eurozone can be quite expensive now.

best regards,

Bopper
 

-How can you improve things when you don't make mistakes?