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Beneath the sun-soaked streets and stunning architecture lies a darker side to istanbul. Descend deep below istanbul's centrum into a parallel city, a city that is more than 1500 years old. Stretching across an enormous area of former quarry and made up of an intricate series of tunnels, this macabre site is one of the most fascinating places you’ll visit during your stay in istanbul.
Explore the unknown side of this gigantic city. Lurking below the city’s ancient boulevards, public gardens, and museums, this mysterious sight has become one of istanbul’s unmissable tourist attractions.
Watch as these spine-chilling remains are brought back to life before your eyes, as your expert guide recants the tales of a Constantinople gone-by and a glorious past time wishes we remember again.
Public transportation options are available nearby
Suitable for all physical fitness levels
For a full refund, cancel at least 24 hours before the scheduled departure time.
Serpent Column
The Serpent Column (Ancient Greek: Τrikarenos Οphis "Three-headed Serpent"), also known as the Serpentine Column, Plataean Tripod or Delphi Tripod, is an ancient bronze column at the Hippodrome of Constantinople in Istanbul, Turkey.
Discover the hidden gem of Istanbul with a visit to the Theodosius Cistern! Nestled beneath the bustling streets of this historic city, the Theodosius Cistern offers a breathtaking glimpse into the past. Marvel at the stunning Byzantine architecture, with its elegantly arched columns and serene pools reflecting the intricate stonework. This underground marvel, less crowded than the famous Basilica Cistern, provides an intimate and awe-inspiring experience. Whether you're a history enthusiast or a curious traveler, the Theodosius Cistern promises a unique adventure into Istanbul's rich heritage. Don’t miss the chance to explore this captivating subterranean world!
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25 đánh giá
Tổng số đánh giá và xếp hạng từ Viator & TripAdvisor
Elina A,,7 thg 9, 2025
- Đánh giá từ Viator
We had the absolute pleasure of touring with Rose, and she was incredible from start to finish! 🌟 She’s not only extremely knowledgeable, but also has such a warm and engaging way of sharing information. Rose took the time to explain everything in detail, answering questions with patience and enthusiasm. I learned so much thanks to her, and she made the experience both fun and fascinating. Her passion for what she does truly shines through, and it made all the difference. I would 100% recommend Rose as a guide—you won’t just see the sights, you’ll come away with a much deeper appreciation and understanding.
Wander677066,,10 thg 7, 2025
- Đánh giá từ Tripadvisor
It’s a very cool historical walking tour… We learned a lot about the real Constantinople versus the size at Istanbul is today… The sisters are absolutely amazing
X9782CAbaileys,,26 thg 6, 2025
- Đánh giá từ Tripadvisor
As a Canadian tourist, what absolutely blew me away was how your guide could weave together the intricate stories of emperors, sultans, and architects across centuries! Standing in the Basilica Cistern and hearing about the Medusa heads - how they were placed upside down, that level of detail was incredible. Our guide's knowledge of the stories of places intrigue made me feel like I was walking through a living novel. The way she explained the architectural genius behind the Hagia Sophia's massive dome - how it seemed to float without visible support and influenced mosque design for centuries - was absolutely captivating. And learning about the secret meanings behind the Iznik tiles' patterns in the Blue Mosque, each color and design telling a story, showed such deep cultural understanding.
238bernardz,,31 thg 5, 2025
- Đánh giá từ Tripadvisor
Istanbul is breathtaking but underground is another world. We enjoyed every second with Rose. This city is more than what it seems, every corner has a different story and sightseeing surprise. This whole city is like an open air museum itself.
767tedk,,18 thg 2, 2025
- Đánh giá từ Tripadvisor
Underground of Istanbul is something I have never experienced before. You can find a medusa underneath Hagia Sophia, really amazing
Voyager48208593215,,30 thg 12, 2024
- Đánh giá từ Tripadvisor
This was the highlight of our trip to Istanbul. Rose was friendly, incredibly knowledgeable and so happy to answer questions. If you want to really learn about the history of the city (and more), this is the tour for you!




sandeepach,,28 thg 12, 2024
- Đánh giá từ Tripadvisor
My wife and I did three different historical walks during our trip, and this was hands down the best one. Rose planned our walk incredibly well and was so knowledgeable that we really left fascinated with Istanbul's history. She was also very personable and gave us some excellent recommendations around the city. 11/10 would definitely recommend, and we'll be coming back the next time we're in Istanbul.



C5158ADstevenj,,1 thg 11, 2024
- Đánh giá từ Tripadvisor
Our guide Rose was excellent, informative and fun. The cisterns were very cool. An unknown below ground treasure of Istanbul


632robl,,14 thg 10, 2024
- Đánh giá từ Tripadvisor
Elle was a great guide, knowledgable and entertaining. Good to hear and see some things that are not on the mass tourism agenda!
M144NQsamuelg,,3 thg 9, 2024
- Đánh giá từ Tripadvisor
Very interesting tour with a different point of storytelling. We loved it and enjoyed every second. Underground of Istanbul is breathtaking








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