Plitvice Falls, Croatia

Plitvice Falls is a system of connected waterfalls between tufa lakes in Plitvice Lakes National Park, one of Croatia's oldest and largest national parks. Its travertine barriers slow and hold back the flowing water and keep growing in height, continuously reshaping the landscape. In 1979 the park was inscribed on the UNESCO World Heritage list for its series of tufa lakes, caves and connected waterfalls, and it draws about 1,000,000 visitors a year.