On a hot day, this is the ideal place to visit. On a cold day, this is the ideal place to visit. Definitely go and see this cistern as there is so much history in Istanbul and this is just one facet.

The Basilica Cistern is unique for the splendor of its Byzantine design and construction but admission is overpriced (10TL or about $6) and the lines can be long for what is about a 15-min. visit. The site would be a better value if it were included as one of the attractions on the museum pass. The vaults and the Medusa... More

I toured this underground Cistern because I'm a huge Sean Connery fan. It's only 10TL to get in and worth the wait in line.

Being a cistern (underground), you could easily walk past this because there are only a few signs explaining what it is. Once you enter, the 2.4 acre (yes, acre) water supply of Old Istanbul is laid out before you with beautiful lighting and simple railed boardwalks carrying you across and round the entire cistern. I don't think you will need... More

Do not miss to go to the Basilica Cistern. You won't regret it. Very good choise during summer, because it's cool down there.

It is not a place to dwell for long periods but you will not see its like elsewhere so it's another must see.

Neat place to visit, great history and fun facts to learn here. The line was short, no guide needed. Our toddler was in a stroller, which we thought might restrict us but they didn’t stop us. There were about 30 steps, and then smooth floors, no issues for the stroller.

I was surprised how beautiful this place is. it's not big, but I will highly recommend to visit it, especially, if Blue Masque is closed for religious services.

It does not look much from the outside but its a very nice place. An underground water reserve built in the roman time. I would recommend anyone to visit this place. It does not take much more than half an hour of your day.