Visit Holland at the height of tulip season on this Northen Europe cruise, when the country’s fields explode in vibrant swaths of every imaginable color. Wander through the enchanting Keukenhof Gardens, home to millions of blooms. Then, set off on a coastal voyage to small countryside cities and a few new-to-Windstar destinations. Explore the quaint streets of Harlingen - a small-ship exclusive - and wander along its old canals, merchant houses and charming little alleys.