Sail through the inland waterways of the Low Countries—Holland and Belgium. Begin with an overnight stay in vibrant Amsterdam. Cruise through a vast network of canals and rivers, stopping in key cities to soak up Dutch, German and Flemish culture. Witness feats of Dutch engineering. See modern Rotterdam and the windmills of Kinderdijk before ending in Antwerp, Europe’s diamond capital. In the spring, visit Keukenhof Gardens in bright bloom.