Plitvice Lakes National Park, also known as the Sixteen Lakes, connects the Upper and Lower Lakes via a boardwalk. Water overflows from travertine dams, creating cascading waterfalls. The lake water's color changes with the sunlight, ranging from emerald green to deep blue. Fish swim in the crystal-clear water, visible even as they swim through fallen tree trunks. In autumn, fallen leaves float on the surface, mingling with the travertine deposits. The park offers numerous walking trails, taking at least four to five hours to complete. Park buses and ferries take visitors to different starting points, saving you some walking effort. There's a picnic area near the entrance where you can sit and eat your own food. Overall, it's the kind of place that encourages leisurely strolling.