July the 29th, 2026 – Croatia has opened its very first biological swimming pool in the continental town of Čazma, representing a significant step forward in terms of sustainable tourism. Croatia has officially opened its first biological swimming pool, marking a milestone in sustainable tourism and environmentally friendly recreation. Unlike conventional swimming pools, the biological pool uses natural filtration instead of chlorine or other chemicals. Officials say the biological pool represents a new direction for Croatian tourism, combining recreation with environmental protection. With the opening of the country’s first biological swimming pool, Čazma is hoping to attract visitors looking for a different kind of summer experience, one centred on nature, sustainability and chemical-free swimming.