Photo taken on Aug. 6, 2020 shows the ruins of the ancient city of Hierapolis in Denizli, Turkey. The ruins of Hierapolis is listed as a UNESCO World Heritage Site.

The ancient city of Hierapolis has long hidden a poisonous secret in its mysterious "Gate to Hell". But modern science has finally uncovered the truth behind the Roman myths.

DENIZLI, Turkey . The discovery of a necropolis found in Turkey’s UNESCO World Heritage site Hierapolis-Pamukkale changed the history of the region, according to the head of excavation in the ...

A tomb believed to be that of St. Philip the Apostle -- one of the 12 original disciples of Jesus -- was unearthed during excavations in the ancient Turkish city of Hierapolis.

The Ancient Romans had a special affinity for hot springs and thermal baths. They established many of their main settlements, where such activity was ident ...

Photo taken on Aug. 6, 2020 shows the ruins of the ancient city of Hierapolis in Denizli, Turkey. The ruins of Hierapolis is listed as a UNESCO World Heritage Site. (Photo by Mustafa Kaya/Xinhua) ...