After the vast city spanned the light side of En’quorra around 1000 EL, there was no more room to expand outward. Although some capital districts already had grown vertically, after this point, all further development had to be built on top of existing structures. Labor was cheap and plentiful, but the quickly growing population made city planning impossible. Today, a typical district in the Ecumenopolis consists of 5 tiers. The lowest tier consists of the natural and artificial caverns below ground level. These caves have existed since before humanoids settled the land, and are full of unimaginable horrors that have never seen the light of Dei, nor the twinkling of Voideyes. They have never been explored, and their true depth is not known. The next tier is almost entirely abandoned ruins, built between 2000 BEL and 1000 EL. Some monstrous humanoids still inhabit these deep, dark places. Much of En’quorra’s ancient secrets and cultural remnants are buried here. The third tier was built on top of these ruins. Initially, these towers extended the capacity and splendor of the base structures in the second tier, but they have long since fallen into disrepair. Today, they are used as squalorous tenements, and 9 in 10 citizens of the ecumenopolis are peasants who live here, scrounging for food and water. This third tier was built between 1000 EL and 2500 EL. During this time, a great network of suspended, magically propelled tramways was built, stretching far and wide across the ecumenopolis. Although the tram cars themselves are out of commission, particularly brave people use magic devices called zip-gloves to speed across the ecumenopolis by these old rails. Skybridges and structural supports crisscross these tightly-packed towers, and cast much of the concrete jungle into shadow. On top of these tenements, the cosmopolitan tier emerges. A new foundation was built on top of many of the tenement roofs around 2500 EL, which further blocked the sunlight and provided a ‘blank slate’ for new construction. This fourth tier contains all of the ecumenopolis’ commerce, as well as its meager food production. Nourishing plant life grows on the sunward sides of these buildings, but it’s only enough to keep the most wealthy citizens well fed. These semi-affluent people, such as powerful merchants and adventurers, also make their homes in this cosmopolitan tier. At the very top of the city, the highest and most opulent towers house both the offices of the Orthodoxy as well as the holdings of En’quorra’s nobility. A hopeful commoner might climb the towers to appeal to the local baron for the needs of their community.