The waterways of Holland and Belgium overflow with beauty all year long, but there is one season when the region transforms into a landscape out of a fairy tale: in the spring, when acres of flowers explode in a riot of color and scent. This — on top of medieval churches, windmills, Dutch and Flemish masterpieces, Renaissance palaces, diamonds, porcelain, lace, world-famous chocolates and cheeses, and centuries of history and culture — is what makes our Tulip Serenade such a rare and wonderful treat.