My favorite mosque, which was a total surprise. It is small and just bursting with beautiful Iznik tiles and gorgeous architectural details. We were practically the only people there, maybe 2-3 other tourists, so the vibe was very personal. The entrance is a little tricky, because it is not obviously marked, but more than one person pointed us in the right direction (without even being asked, they just knew what we were looking for)! There is a covered market all around it, which I actually liked much better than the Grand Bazaar. You don't need a lot of time inside, 30 minutes at the most, but this mosque punches way above its weight. It is really like a hidden gem.