Gradsko kupalište Duga Resa

The Mrežnica is Croatia's tufa river par excellence — 64 kilometres threaded with 93 travertine barriers and dozens of waterfalls — and Duga Resa's town beach puts you in it, right in the centre of town. Renewed stone banks, a pontoon, a playground, a café, sports courts and a big lawn make it a proper summer living room; the county public-health institute's June 2026 sampling rated the water excellent. The river warms pleasantly by mid-summer and the falls upstream are a short walk away.