Thermal Springs

Süleyman Pasha Thermal Bath It takes place in the Yukarı Pazar district of İzmit. It had been constructed in the 14th century. It is the oldest Ottoman building in the region.

Yazlık Thermal Spring, which is 15 km away from Gölcük, Maşukiye Spring in Maşukiye and , and Soğuksu Spring in Bahçecik are very popular places of the area.