A majestic winged pegasus flying in front of a grand fantasy castle with a rainbow in the sky.

The central focus of this vibrant fantasy illustration is a magnificent white pegasus with expansive, feathered wings, soaring mid-air. Its powerful form dominates the foreground as it flies past a towering, ornate stone castle. To the left of the scene, a smaller dragon with iridescent wings glides near the castle towers, adding to the magical atmosphere.

The setting is a lush, mountainous landscape featuring a cascading waterfall that flows into a pool at the base of the castle walls. The architecture is quintessential fantasy, characterized by numerous pointed spires, stone battlements, and arched windows glowing with warm light. Small colorful pennants and flags flutter from the towers, reinforcing the festive or regal nature of the environment.

The color palette is rich and saturated, blending warm golden tones on the castle surfaces with the cool, ethereal whites and greys of the pegasus. A soft, hazy rainbow arches across the upper sky, bridging the gap between the dark, dramatic clouds and the sunlit peaks of the distant mountains. The light appears to emanate from a setting sun, casting a soft, painterly glow over the entire scene, which is rendered in a detailed, illustrative style typical of fantasy art.