Istanbul Underground Cistern Excursion Reviews
Interesting from a historical point of view. Not much to actually see. Size is amazing.
The Cisterns were interesting, but again, not a place I would return to. It is always interesting to see how those of the past lived.
We actually did this on our own. We were able able take the public rail to see the Blue Mosque first, then the Hagia Sofia, then Underground Cistern, the Grand Bazaar, and Spice Market without taking any formal tour. We walked our way back to the ship from the Blue Mosque and again saw all the sights we wanted without taking a ship tour with significant savings.