A gigantic floating castle, surreal and dreamlike, covered with clouds, (best quality, highres, vivid colors), (surrealism, fantasy) with (ethereal, magical) atmosphere. The castle is magnificently detailed, shining in different colors under the (soft, gentle) rays of the sun. It has (tall, towering) towers and (elaborate, intricate) architecture, giving it a majestic and grand appearance. The clouds surround the castle, making it appear as if it is (part of the sky, a celestial realm). 
The Northern lights (dancing, shimmering) in the sky, casting vibrant hues of greens and purples, adding an(otherworldly, enchanting) beauty to the scene. On the other side, the bright Southern lights illuminates the clouds with stunning shades of pinks and oranges, creating a stunning contrast to the coolness of the Northern lights.
In the foreground, there is a (peaceful, serene) landscape with (lush, vibrant) green meadows, (colorful, blooming) wildflowers, and (gentle, flowing) streams. The landscape reflects the surreal and ethereal ambiance of the sky above.
The overall (lighting, illumination) of the scene is (soft, diffused), with a warm glow that enhances the dreamlike nature of the castle and its surroundings. It creates a sense of tranquility and a feeling of being in a magical realm, Galaxy sky, starry sky 
A castle with a aurora light in the sky and a lake