Experts in their fields such as Caner İmren, Çiğdem Özkan Aygün, Engin Aygün and Gülşen Küçükali reveal the underground secrets of two of Istanbul's most important buildings. The cisterns, wells and galleries hidden beneath Hagia Sophia and Topkapi Palace are brought to the screen for the first time in this documentary series. Accompanied by detailed investigations by academics and underwater footage, this discovery, which will shed light on the history of Istanbul, awaits curious viewers. Are you ready to discover the mysterious world in the depths of Istanbul?

Episodes

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Blue Graveyard Thistlegorm

Lost files of the underwater world. Lost files of World War II...

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Carnatic in the Deep

This adventurous expedition takes viewers to the legendary waters of the Red Sea and the timeless remains of the Carnatic ship that sank in 1869.

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Secrets of the Deep - Stingrays

Witness the stingrays' struggle for life in Hatay's rich underwater ecosystem!

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Melpomene's Curse

Engin Aygün Selçuk Kolay ve Savaş Karakaş Ege'nin derinliklerindeki esrarengiz batığın peşinde:

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Secrets of the Shipwreck of Providence

Selçuk Kolay Savaş Karakaş and Engin Aygün, who dived into the İnayet Wreck in 2011, are together again after many years!

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The Mystery of Salem Express

Kenan Doğan and Engin Aygün, who first dived to the Salem Express wreck in the Red Sea in 1996, are back at the same spot with Cumhur Marşan and Gül Demirci years later.

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Beneath Topkapi Palace

Cavities such as cisterns, wells and galleries identified in the area under Topkapı Palace are coming to light under the guidance of academics.

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Beneath Hagia Sophia

The underground secrets of Hagia Sophia are coming to light in the light of the knowledge of academics.