Riviera Travel says it is the U.K.'s largest river cruise operator. The cruise line has 13 ships that sail Dutch waterways and the Danube, Douro, Rhine, Moselle, Main, Rhone and Seine rivers.

There are more European river cruise destinations than you might think with sailings to the Seine, Rhine, Rhone ... Riviera Travel also offers cruises on the Nile River onboard the French colonial ...