The word ((Yan Yan)) in the Turkish language comes from the infinitive (Yanmaq) which means (to burn) and according to the use and function of this building, which is a hot spring, it emphasizes the existence of a hot spring and permanent heat. It is relatively high in this building. This building is one of the works of the Qajar period. The Yan Yan bath was located on the bank of the Abhar Chai river and at the time of its construction, it was located at the far end of the northern side of Khorramdara city, which today, with the expansion of the city towards the transit road, is in its center. The bathroom is located near the river, probably for the purpose of disposing of sewage or using river water.

The historical monument of Hamam Yan Yan is located in the center of the city and in the middle of the traditional fabric, on the banks of Kabir River and on the west side of Sardar Jangal Street. This building with an area of ​​210 square meters is built in the architectural style of the Safavid period baths, but in smaller dimensions, and includes spaces such as the entrance vestibule, foot of the shokhaneh, bineh and srabineh, hothouse, cleaning house, cold water and hot water tanks, and the hot water tank. . The history of its construction belongs to the late Qajar period and it has been used for the past 25 years, now it is ready to welcome tourists as a traditional dining room.