During the ongoing excavations in the ruins of Saint Polyeuktos Church in Istanbul’s Saraçhane neighborhood, which was destroyed during the Latin invasion, a 1,500-year-old underground passage has been discovered.

A previously unknown underground passage about 20 meters from the nearby Haşim Işçan Passage was discovered. The carved marble blocks and reliefs in the underground passage, which contains mosaics and stone inlays, have impressed researchers.

Mahir Polat, Deputy Secretary-General of the Istanbul Metropolitan Municipality, stated that the structure is an excellent example of the city’s architecture that has withstood the test of time and the wrath of earthquakes.

“What is one of the most important aspects of this discovery of a 1,500-year-old passage? Dozens of tremors have passed in these 1,500 years in Istanbul, which is currently struggling with earthquake risk. This structure has managed to survive all these earthquakes. Türkiye should learn the secret and have knowledge of this,” Polat explained.