PROMPT:
Create a mesmerizing Cosmic Wonder scene set in the heart of a radiant nebula, where swirling clouds of turquoise and emerald green gas illuminate a sprawling, ancient alien metropolis. The architecture of the city is a fusion of bioluminescent organisms and shimmering, iridescent minerals, with towering spires that pierce the cosmos like shards of splintered opal. Vibrant hues of sapphire, amethyst, and gold dominate the palette, with flashes of electric blue and orange where intense stellar energy crackles through the atmosphere. The overall effect should be photorealistic, with intricate textures and subtle lighting that invites the viewer to step into this extraterrestrial marvel.