One of Europe's top natural wonders is Croatia's Plitvice Lakes National Park. Imagine Niagara Falls sliced and diced and sprinkled over a vast and heavily forested canyon. It's a lush and unforgettable valley of 16 terraced lakes, laced together by waterfalls and miles of pleasant plank walks. For more information on the Rick Steves' Europe TV series — including episode descriptions, scripts, participating stations, travel information on destinations and more — visit www.ricksteves.com.