A majestic ice castle in a magical winter wonderland, illuminated by warm golden Christmas lights. The cathedral features intricate Gothic architecture, with tall, pointed spires, large arched windows, and detailed carvings, all made entirely of shimmering, translucent ice. The scene is surrounded by snow-covered evergreen trees, adorned with glowing fairy lights in soft white and gold tones. The foreground showcases a grand staircase made of frosted ice, leading to the cathedral entrance. The sky above is a deep midnight blue, filled with twinkling stars that add a dreamy, festive atmosphere. Photorealistic lighting highlights the ice's texture and glow, creating a contrast between the cool icy tones and the warm light from the cathedral. Highly detailed and immersive, capturing the essence of a fairytale Christmas night.