A popular spa since Roman times, Termal is a good stop if you're en route between Yalova and either İznik or Bursa. The springs were used by the Ottomans, refurbished in 1900 by Sultan Abdül Hamid II, and regularly visited by Atatürk in the 1920s and 1930s. Termal is a self-contained resort with three hotels (Çamlık, Çınar, and Thermal), exotic gardens, a huge swimming pool, and four historic bath houses offer many options for soaking in the mineral-rich waters.
The hotels also have private baths for guests only. Avoid summer weekends, when the place is absolutely packed and the crowds will probably outweigh the baths' relaxing properties—anyway, the hot baths are more appealing, and the rates cheaper, in other seasons. Also consider a walk in the pine forests, where you can enjoy a packed lunch.
About 70 km (42 miles) west of İznik; 12 km (8 miles) southwest of Yalova on the way to Çınarcık, Termal, 77400, Turkey