Well of Sparks

The well of sparks is a central religious hub in Iacon, contained in the Primal Basilica, which also doubles as a religious artefact museum. The section of the building itself is open roofed, exposing the well to the elements.
Pre-war, the well is where the all spark was located, which got ejected to optimus in an effort to preserve the planet. From that point on, no more forged sparks emerged, and the chance to kindle a newspark dropped, making it near impossible during the wartime.