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b"Since ancient times, the Rhine has been one of the world's busiest rivers and major trading routes. Robber-baron castles placed strategically along the Rhine collected taxes that helped towns get rich. Today, under the watchful eye of once-mighty castles, barges carrying thousand-ton loads and busy trains transport goods and tourists along the river. For more information on the Rick Steves' Europe TV series \\u2014 including episode descriptions, scripts, participating stations, travel information on destinations and more \\u2014 visit www.ricksteves.com."