AMA Waterways, a California-based river cruise line, operates a fleet of 12 ships cruising in Europe, Russia and Southeast Asia. The line offers destination cruises on the Douro river in Portugal, the Rhone river in France, the Volga-Baltic Waterway in Russia and the Mekong river in Vietnam and Cambodia. AMA Waterways appeals to those looking to experience the above destinations with the amenities of an upscale hotel.