This ruin of antiquity would be like others of the period, if it weren't for the absolutely mesmerizing lighting on display in this colossal underground cavern. To say that the pictures don't do it justice is an understatement, because you aren't in those pictures to see the golden hue reflecting on your skin. The picture can't express the feeling of being in a room that was built 1500 years ago; the cool damp air a welcome respite from the smog and swelter of Istanbul.
It's difficult to put my finger on exactly what's so special about this place to me, so why not give it a try yourself, and let everyone else on Bucketlist know what you thought of the experience. You're already in Istanbul, and it's right in the heart of Sultanahmet, near all the other sites you're there to see already!