Create a depiction of a fantasy landscape at twilight, complete with a stunning, epic castle. The sky is a canvas of soft pinks, deep purples, and the last glimmers of golden sunlight. The castle is set atop a high mountain, with its tall, elegant spires and sturdy stone walls. Flags wave atop the highest towers, and intricate details are etched into the stone, suggesting a rich history. The surrounding landscape boasts a lush forest that stretches to the horizon, a sparkling river that flows from the mountain's base, and distant rolling hills. The scene should have no characters, allowing the majestic castle and the breathtaking natural beauty to be the sole focus.
