At the Topkapi Palace (which you can see more of in my other posts here) I was amazed at the details and intricacies that this place had! Every ceiling has an immaculate display of calligraphy and detailed artwork. The walls, doors, windows--even floors--are also not ignored.
This picture of the day is another ceiling I saw as we were exploring the Harem (the Sultan's Palace):
Perhaps it's because I'm far away, but everything looked so symmetrical as well. I'm sure they did this all by hand. The patience they must have had to do this!