A planet with billions of people and billions of years of history, Cybertron is a complex world. The vast majority of its people have vehicle forms allowing for a broad range of transportation, which means most settlements formed as sprawling interconnected knots of tangled roads and intersecting territory. The ability to naturally travel several hundred miles in a day means community expanding quite far from the very onset. On top of that, the unique geography means some cities are underground, some are flying, some are strung across enormous canyons.
Even for a species so long-lived, the sheer amount of time that this world has weathered means cities rise and fall and fade into legend. Tectonics shift and bury old hallowed grounds. Culture moves on and people forget who came before. What secrets are there, hidden in the layers of this living planet?