What is the name of the round object above the mosque?

The mosque has an onion-like roof, or a circular roof. This circular roof does not originate from Islam. This circular roof originally originated from a building in the Roman Empire called " There is a big hole in the roof of the Pantheon. This domed building still exists today in the city of Rome, so if you go to Rome, you can see that this is the most perfect building left by the Roman Empire until now. Because this roof has no structural impact at all, and it is still standing well.

This "Pantheon" was originally built to be a chapel. In this way, after several changes, it was given the name Patheon. Well, in the Eastern Roman Empire, the first large Byzantine chapel built by two engineers in Constantinople was called St. Sophia Cathedral, which is called St. Sophia Cathedral in Turkish. Aya sofya, has anyone been to Constantinople please raise your hand? Is there any? Did you see this? Alas! You must go to this place, because there are only four places that must be visited in Constantinople, one is the Sophia Chapel, one is the Blue Mosque, and the other is called Topkapi Museum or royal palace. The other one is the Mosque of Sueyman.

At a time when Islam did not have such a great building, the building built by Christianity, the two engineers of the "Holy Wisdom Church", was unprecedented and almost unprecedented. Why? Because later, when the Turkmen dynasty built the same large domed chapel next to it, the diameter was several meters smaller than it. So this is a dome hanging almost ten stories high with no pillars at all. This is one of the greatest buildings in history. From that time on, Islamic architecture basically copied Christian architecture, and then gradually developed into their own style, and Christians gradually stopped building such things. So now when you see something with a dome and an onion top, you say, "This is something from Islam." When you go to Moscow in the future, you will see the St. Basil Cathedral in Moscow. It is not only an onion dome, but also a pineapple dome with a propeller, which looks like it holds a lot of pineapples. This is because of this It was originally a Christian building that was copied by Muslims. Of course, Muslims are very unhappy about saying this.