Best New Cruise Ships
Courtesy of Viking River Cruises
Launching: 2012 and 2013
Great For: Culture vultures.
Destinations: The Danube, Rhine, and Main rivers.
Highlights: Panoramas from a 360-degree-view sundeck; staterooms whose glass walls slide open, turning them into private verandas; two Explorer suites with wraparound terraces. vikingrivercruises.com.