Most riverboats sailing in today's cruise fleet are replicas of those that sailed the nation's rivers in the 19th century. The feeling is definitely Victorian: Parlors are furnished with Tiffany lamps and leather wing chairs, and rocking chairs line the outer decks. Smaller riverboats offer just a lounge or two and a dining room. Bigger ones may add a small health club, theater, and a few other amenities, while still retaining their traditional character.The largest riverboat, which carries more than 400 passengers, registers only 3,000 tons.
