PROMPT:
Generate a breathtakingly realistic image of an underground metropolis, alive with vibrant hues of electric blue, neon green, and radiant yellow, where towering crystalline spires and grand archways pierce the dark skies, as if defying gravity, surrounded by a labyrinth of illuminated tunnels and iridescent waterways that shimmer like a celestial map, while mysterious aircraft-like vehicles zip through the air, casting shimmering shadows on the walls, amidst a bustling hub of activity, where diverse inhabitants from all corners of the world mingle and marvel at the wonders of this subterranean marvel.
