The Krka River builds the rock steps it falls over. Along an 800-metre stretch in Dalmatia, seventeen travertine steps drop about 46 metres in a single spreading fan of white water. That is Skradinski Buk, the largest travertine cascade system in Europe. The barriers are alive and still growing, so the line of the falls shifts slowly over generations. Clear pools stack between the ledges, shifting from turquoise to deep green as the light moves, and small wooded islets sit midstream where the current splits around them. It is the last of seven such barriers on the Krka, some 49 kilometres downstream from the first. Since 1985 the whole canyon has been protected as a national park, and it is one of the most visited in Croatia.
Wooden walkways carry you right across the base of the falls, close enough that the spray settles on your skin and the roar fills the gorge. The full circuit crosses low bridges strung between the wooded islets; take the far, quieter arm and it stays a walk rather than a midday shuffle. Many visitors arrive by park boat from the little town of Skradin, drifting up a green, cliff-walled canyon before the cascades come into view. You can no longer swim beneath Skradinski Buk — bathing stopped in 2021, because thousands of feet a day were wearing down the living travertine. The trail instead loops past centuries-old stone watermills, where the river once ground grain and fulled wool. In autumn the riverside oak and ash turn copper and gold against the white foam, while the flow, thin after the dry summer, begins to swell again with the first rains. Boats carry on upstream to Visovac, a Franciscan monastery that fills its own tiny island.