Archaeologists have unearthed the remains of a bathhouse in the ancient city of Aizanoi in western Turkey.

Talking to Anadolu Agency (AA), Zerrin Erdinç, deputy head of the excavation team, said the bathhouse appeared to have been from fourth century B.C. It consisted of three parts that provided cold, warm and hot bath facilities.

"The structure and other details reveal that social classes were using them as public baths in ancient times," said Erdinç, who is also an academic at Dumlupınar University in Kütahya.

Romans could spend a whole day in the baths, as they were also seats for communal gatherings. Men and women used the baths at separate hours.

"There is also striking similarities between the ancient and modern-day baths," she added.

The remains of the bathhouse show that it had various sections meant for different purposes, like undressing, bathing, sweating, resting and eating.

"These required separate rooms with specific facilities, which the Romans had built painstakingly to accommodate different purposes," explained the archaeologist. Archaeologists said the area, which was added to the UNESCO World Heritage Tentative List in 2012, has revealed settlements dating back to 3000 B.C.

Located some 57 kilometers from Kütahya's center, the city of Aizanoi was a religious center under the Roman Empire in 133 B.C. but lost importance during the early Byzantine period.

The flat area around the Temple of Zeus was transformed into a fortress in the medieval period and was used as a base by the Cavdar Tatars in the 13th century. It was discovered by European travelers in 1824. Excavations carried out by the German Archaeological Institute between 1970 and 2011 unearthed various ancient structures, including the Temple of Zeus, a 20,000-person theater, a 13,500-person stadium and two baths.

The Temple of Zeus was the first of the magnificent structures built in Aizanoi's city center on the west bank of the Penkalas River (now known as Kocaçay).