The Sultan's Bath at Yıldız Palace, in Istanbul, is fed by thermal water at 40°C. This former imperial hammam offers a steam room, a marble-slab kessa scrub, beldi soap and massage, set within the palace's historic grounds.
Insider tip — Yıldız Palace was the last great residence of the Ottoman sultans — Sultan Abdülhamid II ruled the empire from this hilltop complex above the Bosphorus for over three decades, preferring its seclusion to the exposed waterfront palaces. The Sultan's private bath within Yıldız Palace is among the most intimate of imperial hammams, where the most powerful and paranoid of the late Ottoman rulers maintained the ancient tradition of royal bathing in the twilight years of a six-century empire.