Photo by Yaroslav Shuraev on Pexels
🇹🇷 Turkey · Köyceğiz, Muğla Province
♨ Temperature
40.5°C
⛰ Altitude
—
⚗ pH
—
💧 TDS
—
🌊 Flow rate
—
📅 Established
Used as a healing site for over 2,000 years
✓ Verified on 2026-08-02
Sultaniye Thermal Springs and Mud Baths sit on the fault line at the base of Ölemez Mountain, on the southwestern shore of Lake Köyceğiz in Muğla Province, near Dalyan. The site has attracted visitors for more than two millennia and remains one of the region's oldest continuously used healing centers. Water emerges at 39-42°C and carries sulphur, iron, calcium, potassium and radon, giving it the characteristic rotten-egg odor associated with sulphurous springs. Visitors bathe in domed indoor pools and outdoor thermal pools, and coat themselves in the mineral-rich mud, traditionally used for rheumatic conditions, skin ailments, muscle pain and stress relief. The springs are typically visited as part of a boat trip from Dalyan through the reed-lined waterways of the Köyceğiz-Dalyan wetlands.
| Sulphur | — |
| Iron | — |
| Calcium | — |
| Potassium | — |
| Radon | — |
The springs have been used for healing purposes for more than 2,000 years, making them one of the oldest thermal sites in the region.
AddressSultaniye Kaplıcaları, Köyceğiz, Muğla, Turkey (southwest shore of Lake Köyceğiz)