This photo taken on Aug. 11, 2024 shows the ruins of the ancient city of Hierapolis in Denizli, Trkiye. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

This photo taken on Aug. 10, 2024 shows the ruins of the ancient city of Hierapolis in Denizli, Trkiye. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

Tourists visit the ruins of the ancient city of Hierapolis in Denizli, Trkiye, Aug. 11, 2024. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

Tourists visit the ruins of the ancient city of Hierapolis in Denizli, Trkiye, Aug. 11, 2024. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

Tourists pose for photos at the ruins of the ancient city of Hierapolis in Denizli, Trkiye, Aug. 10, 2024. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

This photo taken on Aug. 10, 2024 shows an artifact at the Hierapolis Museum in Denizli, Trkiye. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

An aerial drone photo taken on Aug. 11, 2024 shows the ruins of the ancient city of Hierapolis in Denizli, Trkiye. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

An aerial drone photo taken on Aug. 10, 2024 shows the ruins of the ancient city of Hierapolis in Denizli, Trkiye. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

An aerial drone photo taken on Aug. 10, 2024 shows the ruins of the ancient city of Hierapolis in Denizli, Trkiye. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

An aerial drone photo taken on Aug. 10, 2024 shows the ruins of the ancient city of Hierapolis in Denizli, Trkiye. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)

An aerial drone photo taken on Aug. 11, 2024 shows the ruins of the ancient city of Hierapolis in Denizli, Trkiye. Hierapolis is a UNESCO World Heritage Site. (Xinhua/Liu Lei)