Debrecen Aquaticum is eastern Hungary's most comprehensive thermal and wellness complex, set within the city's Great Forest park. The Mediterranean-themed indoor water park includes thermal pools at 34–36°C, adventure pools, water slides, a wave machine, and a children's section, all housed under a vast glass-and-steel atrium roof. The wellness department features a Finnish sauna, steam cabin, salt chamber, infrared cabin, and a full range of massage and beauty treatments. The complex underwent major expansion in 2018 and is now one of Hungary's leading wellness resort destinations, with an attached hotel allowing multi-day thermal treatment stays. The Great Forest setting — a remarkable area of natural oak woodland within the city limits — adds to the resort atmosphere.