Serene Architectural Three Arches Framing Silhouette

Create a serene architectural scene featuring three large arches framing a silhouette of a fantastical palace at sunset. Replace the dome with an intricate spire, and change the background to incorporate rolling hills instead of a flat landscape. Instead of a crescent moon, depict a starry sky with a large glowing star. The color palette should transition from deep blue at the top to warm oranges and pinks near the horizon, casting soft shadows on the tiled floor below.