İstanbul Medikal Termal is a thermal facility located in Gebze, Kocaeli Province, Turkey. Its thermal water, at around 40°C, feeds indoor pools, with a sauna and massage services.
Insider tip — Istanbul Medikal Termal is located in the Gebze area of Kocaeli Province on the eastern edge of the Istanbul metropolitan region, along the Gulf of Izmit. The facility combines hydrotherapy with thermal mineral waters for wellness and rehabilitation programs. Its position on the Marmara coast connects it to the broader geothermal belt of northwestern Anatolia.