River cruising is becoming one of the most popular ways to tour Europe, and with good reason. From the comfort of your own stateroom's windows and balcony, you can watch the scenery glide past and journey to some of Europe's most storied and beautiful destinations... but you only have to unpack once! Join a river cruise along the Danube, Rhine or Main Rivers and discover medieval castles, rainbow tulip fields and glittering cities from Amsterdam to Budapest.