In a sleek retro-future brutalist gallery, an enormous, serene lighthouse floats with confident grace above a river flowing through the sky. The lighthouse's powerful beam pierces downward, illuminating colorful rooms buried deep underground while electric yellow water arcs dramatically through towering concrete architecture. Rendered in charcoal, chalk, and iridescent film textures, the composition uses a monumental low-angle to create a crisp, readable silhouette against a black background splashed with silver and neon electric yellow hues. Frontal flash lighting cuts through the dream environment, casting sharp shadows that emphasize the water's motion and the lighthouse's calm authority amidst impossible spatial rules.