Combo (Save 11%): Basilica Cistern + Istanbul Bosphorus Sightseeing Cruise

We made a combined booking with Fastlane. For Hagia Sophia and Cisterna Basilica, the tickets we sent were immediately our valid tickets. Worked perfectly. Both sights were very beautiful and interesting. At Hagia Sophia, as a non-Muslim you "only" get to the first level and can look down into the whole mosque. Also very impressive, but not really explained beforehand. At the Topkapi Palace there was only one reservation in the mailing, which is easy to overlook, and we only noticed in front of gate 2 (where you need real tickets). We then had to go back to an agency outside Gate 1 so that we could finally get in with a tour lady. It worked but with a certain loss of time. The palace itself was huge and very beautiful. Be sure to book a ticket with harem access (as we had), this part is the highlight of the palace. All in all, a great day with lots of wonderful impressions.

I recommend visiting it but I think the price is a bit high because there are many more mosques and monuments to visit, but you can not leave stambul without visiting it.

Everything worked well. Sights were very interesting.

We skipped the long line and it was great. My advice is to download the audio guide if you purchased it before you get inside as there is no WIFI. The link to the guide is on the email they sent with your tickets.

Skipping the line to cisterna works flawlessly. Skipping the line to Hagia Sophia (travel time April) is not worth it as the longer line is the entrance line. A warning about the security check and what to bring would have been nice (e.g. cover for hair, long sleeves etc) Audioguide: it is possible to download the audioguide beforehand, however I did not know about that until I was already in at the cisterna and then it was too late, as inside there is no cellphone connection and no internet access. It woul really be helpful to have this information with the WhatsApp info message, which was really nice in general. And then there is the issue with the audioguide for the Hagia Sophia, where on the ticket it says, one is not allowed to use their phone, but then again, how would I listen to the audio guide during the visit? It was fine as no one seemed to care about using a phone, but still this could be a problem.