
A majestic celestial cathedral features soaring white marble arches and intricate crystalline ribbing flowing toward a massive open dome. The ceiling reveals a breathtaking deep indigo nebula with swirling cosmic clouds and brilliant star clusters. Below, a vast hall with reflective pearlescent floors mirrors the celestial sky perfectly. Numerous figures in white ceremonial robes sit in quiet meditation in organized rows. Warm golden candlelight from floor lamps creates an amber glow, contrasting with the cool blue light descending from the galaxy above. A grand staircase leads to a brilliant, glowing golden altar focal point. The scene is an ultra-wide cinematic shot with a vertical 9:16 aspect ratio, emphasizing immense scale. The rendering is crisp with soft bloom and ethereal light rays highlighting hyper-detailed filigree. This composition blends Art Nouveau elegance with sci-fi grandeur, evoking transcendent spiritual peace through high-contrast lighting and a saturated palette of gold and deep space blue. Swirling patterns and ornate mandala designs are etched into the architecture, grounding the ethereal environment in tangible detail.