There were no simple buildings or houses. There weren't even any streets in the place. It was just a series of huge mansions, each with a different design. There were no walls or guards. Furthermore, the mana density of the place was five times higher than normal.
Many structures were floating in the air over some land or simply flying by themselves. The city didn't have a large movement of people, and only a few were flying in the air.
"Let's go to our kingdom's mansion. Don't leave it until tomorrow. You are not allowed to visit the city with your current level," the dean began guiding them to a mansion over a kilometer wide, decorated with statues made of gold and other precious materials.
"This is the city called the heart of humanity. Only mages in the fourth realm are allowed to move freely here. In this place, only the best of the best of humanity gather," the dean explained as soon as they landed.