Architectural poster cinematic retro mountain

Create a vertical retro travel poster themed , with the subtitle . Centered and symmetrical, show a majestic Norse mythological castle in a frozen valley, with the castle reflected on the lake surface. A cracked stone path extends from the foreground to the palace's glowing archway. The palace is towering, in dark navy blue and ivory colors, with sharp spires, golden windows, purple hanging banners, carved geometric decorations, and four clearly visible black wolf statues on the tower tops. On both sides, add snow-covered mountains, surrounding small fortress buildings, floating ice and rocks in the water, and rune-like standing stones on both sides of the foreground path. In the sky, a huge diagonal rainbow bridge (Bifrost) spans from the lower left corner to the upper right corner, containing four distinct color bands: a purple outer ring, a dark blue band, a pale white band, and a golden yellow band. The sky should show auroras in cyan, turquoise, purple, and deep indigo, with vertical aurora beams and a few tiny starlights. Use Art Deco-style travel poster illustration, with flat geometric shapes, clear outlines, layered depth of field, painterly texture, high contrast, and a cool color palette composed of indigo, cyan, lavender purple, snow white, and soft gold. At the bottom, add a dark navy blue title bar containing a centered promotional copy line , below it a huge, letter-spaced uppercase destination title, and below that a smaller, letter-spaced uppercase subtitle, accompanied by a thin gold line and small diamond decorations. Keep the composition centered and cinematic, prohibit realism, prohibit people, modern objects, or watermarks.