Traders have navigated Europe's rivers and intracoastal waterways for hundreds of years, but vacationers are increasingly enjoying these routes as well. Today's passengers can tour European cities by traveling through the shallow waters of France, Germany, Austria, and Hungary (among others). Think you're ready for a river cruise? Ask yourself:

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Hare or tortoise? River cruises are ideal for those seeking slower-paced trips, says Nancy Yale, owner of Cruise Resort & World Travel in Fairfield, Connecticut. Since they have fewer passengers than cruise ships (the average is 100 to 300 people), you won't feel rushed along in large groups.

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Spring breaker or mature vacationer? River cruises typically appeal to those over 50 who've seen major tourist attractions and now want to delve into the countryside, says travel specialist Jamison Bachrach, owner of Wandering Puffin in Plymouth, Minnesota. When cruising a river, you probably won't have to contend with rowdy college kids tossing back shots at the bar. Another bonus: You won't experience motion sickness, because ships sail in shallow waters devoid of waves. But you should know that river cruises include fewer onboard amenities than ocean cruises, Yale says. River ships are floating hotels, not floating resorts, so don't expect midnight buffets, Broadway revues, or casinos.

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Unathletic traveler or outdoor enthusiast?  Forget about spending your days inside playing bridge—river cruises can include excursions that involve lots of physical activity. Peter Deilmann Cruises (800-348-8287) is known for theme trips that appeal to nature-loving types, from cyclists and gardeners to hikers and golfers. Just think about the bragging rights you'll gain when you tee off at Gouverneur Golf Resort, an 18-hole course built around the moated Château du Breuil in Monthieux, France. And both AMA Waterways (800-626-0126) and Uniworld (800-733-7820) provide free bicycles you can grab for a quick countryside pedal.

Spendthrift or smart shopper? Excluding discounts and airfare, and depending on the ship and itinerary, expect to spend $200 to $300 per day. Though it may seem high, that price includes your stateroom, gourmet meals onboard, and shore excursions (which last from half a day to a full day). That rate may also include Wi-Fi service, lectures, and cultural activities such as tours or wine tastings in each port—so if you book a river cruise, you can end up with a nice package deal. Plus, you'll be treated to spectacular views that are included with your booking, since these cruises offer glimpses of multiple cities. Instead of miles of ocean between ports, you can see castles, monuments, pretty countryside, or charming villages as you sail.

See also: How to save money on a cruise

One final option: Have a travel agency customize a solo tour for you. It's a way to treat yourself to hassle-free trip planning. On a specially tailored train trip to the stately Chinese city of Nanjing, for example, I fell in with a delightful American group who provided some fun company. Still, they wanted to know, "How do you manage on your own?"
"Very well," I said. "Very well."

Veteran travel writer Susan Spano is the author of French Ghosts, Russian Nights & American Outlaws. She is now with the Peace Corps in Armenia.