Void Realm, Time Continent, Eternal City.
The layout of the Eternal City is incredibly peculiar. If one could observe it from outside, they would find that any side view of the Eternal City forms a triangle: the outermost city walls are the shortest, and the further you go towards the inner area, the taller the buildings get. The Time Tower in the core area is the tallest structure in the entire city.
Moreover, the buildings do not stand independently; all tall buildings are connected by bridges in all directions, making the entire Eternal City a three-dimensional maze.
What gives mages the biggest headache is that the city's roads—including bridges, walls, and even the ground—are constantly changing. Every hour, the Eternal City is different!