Dark mysterious nightclub, eerie ambiance, rich velvet drapes, luxurious crimson red walls, deep indigo blue accents, metallic silver decorations, dimly lit dance floor, foggy atmosphere, strobing neon lights, ornate gothic arches, heavy stone columns, mystical purple hues, lavish gold leafing, mysterious crypt-like spaces, dramatic spotlights, intense shadows, mystical symbolism, intricate stone carvings, dark wood paneling, lavish chandeliers, eerie candlelight, mysterious alcoves.