The Netherlands! Yes, those awesome landscapes, wooden houses and windmills of Zaanse Schans, unforgettable sunset at the NEMO science museum behind the Amsterdam central station, cycles, a lot of cycles, walking through the streets and on canal banks of Harleem, tulips and just tulips at the KEUKENHOF tulip gardens, a complete contrast at Rotterdam with its breathtaking modern architecture. Finally, an hour cruise from Rotterdam is Kinderdijk, a small windmill village with mills dating back to the 18th century.
Totally a great experience! Here are few pictures.
Link to the post of tulips of Keukenhof: