For over 200,000 years, Coruscant has been one of the most important planets in the galaxy. It has seen and survived dozens of wars, suffered under the control of alien species, served as the capital of the Republic and‒according to common wisdom‒ushered in the birth of the human species.
In ancient times, before the planet became a city, Coruscant was a world covered mainly in oceans. Over millennia, humans spread out over the land masses, covering them with structures‒and as technology developed and overpopulation grew more troublesome, the Coruscanti people sought ways to house their ever-growing numbers. Eventually, the seas themselves were drained, and the humans spread into the empty basins.
It has been over 100,000 years since sunlight last reached the lowest levels of the city. Now, Coruscant stands as a marvel of engineering and sentient triumph, home to thousands of species and countless billions of individuals. Archaeologists spend their whole lives descending through the city's layers, searching for answers about its distant past, and no one in the universe knows Coruscant's full story.