Sailing Europe’s storied rivers, the award-winning Viking Longships offer a an elegant Scandinavian design and “green” features, such as solar panels, an onboard organic herb garden and energy-efficient hybrid engines for a remarkably smooth ride. In 2015, Viking introduced its first ocean ship boasting private verandas in every stateroom, a choice of restaurants offering a variety of fine dining options, the most al fresco dining at sea, an infinity pool, a Nordic-inspired spa, panoramic Explorers’ Lounge and thoughtfully curated book collections throughout the ship, and more—all designed in understated elegance.