"The 921-meter long Valens Aqueducts - a prominent landmark in Istanbul's Fatih district - played a vital role in supplying water to the people of the Byzantine and Ottoman empires. The Roman Emperor, Valens ordered the construction of the aqueduct in late 4th century AD to feed water from the hills beyond Istanbul to hundreds of underground cisterns inside the city, including the famous Basilica Cistern located opposite the Hagia Sophia. The best place to view the towering stone aqueduct today is where it crosses the busy Ataturk Boulevard near the Mosque of Şehzade. The boulevard is the main thoroughfare between Taksim Square and the Aksaray neighborhood."
This should be more on the tourist map. I first visited maybe 29 years ago when it was still possible to climb up on the aqueduct- which has several km in sections still remaining. These days there are cafe outdoor sears in the cool shade of the arches and it’s in magnificent condition in places.
Russ Gann
Google
You can touch history here and think about the changes that have happened since the aqueduct was constructed in 346 CE. The men climbing to build it every day could never have conceived that 1700 years later, it would still be standing in its original form with self-propelled metal vehicles moving at astronomical speeds (to them) under their workplace.
Lauren Beasley
Google
Wow. Incredible! Everywhere you look, there is history.
Check out the above ground cistern while you're around there. Go up the steps inside!!
Not far from this is an excavated site that holds ramins of a roman church. Very cool.
Nika Kapanadze
Google
A truly impressive sight! Seeing this ancient Roman aquaduct seamlessly integrated into the modern cityscape is a must-see and a powerful reminder of Istanbul's layered history.
Dimitrix IV
Google
Wow, I was amazed by this ancient aqueduct, which is now used for cars to pass (not a fan of the idea, though). I think this structure was an unexpected highlight of my trip.
V H
Google
This impressive structure, that now crosses a major highway with traffic going through it was once in Roman times an impressive aqueduct system that supplied Constantinople it takes its name Emperor Valens who completed its construction.
Robert Quinn
Google
Worth a visit, there's a park right along the aqueduct with good views.
Gleb
Google
The most preserved section of the aqueduct that supplied Constantinople with water. Was completed by the emperor Valens (hence the name) and still in use in Ottoman times.