Two thousand years ago, ancient tourists flocked to a Greco-Roman temple in Hierapolis, modern-day Turkey, situated on top of a cave once purported to be the gateway to the underworld. They watched in ...

Formed by cascading hot springs and framed by ancient ruins, these white terraces in western Turkey create a surreal ...

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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) ...

Atlas Obscura on Slate is a new travel blog. Like us on Facebook, Tumblr, or follow us on Twitter @atlasobscura. The deadly vapors that waft out of this "gate to hell" were once used in ancient ...

Deriving from springs in a cliff almost 200 m high overlooking the plain, calcite-laden waters have created at Pamukkale (Cotton Palace) an unreal landscape, made up of mineral forests, petrified ...

Two millennia ago, a small Greco-Roman temple in present-day Turkey awed and enthralled its residents. Just beyond its stone gate, in a grotto shrouded in a heavy mist, a strange force worked dark ...

This photo taken on Aug. 10, 2024 shows the ruins of the ancient city of Hierapolis in Denizli, Türkiye. Hierapolis is a UNESCO World Heritage Site. （Photo: Xinhua) Tourists visit the ruins of the ...

New research on the ancient Greco-Roman city of Hierapolis has uncovered the secret behind one of its age-old mysteries. Nicknamed the "Gates of Hell" or "Pluto's Gate", the site in modern-day Turkey ...

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. In Pamukkale in western ...