Reykjavik, Iceland, Nordic architecture, colorful buildings, Hallgrimskirkja church, winter scene, snowflakes gently falling, frozen lake, icy mountains in the distance, frosty mist, aurora borealis, night sky, stars shining bright, cold winter air, wooden benches, snow-covered trees, frozen fountain, old lamp posts, narrow cobblestone streets, cozy cafe lights, warm interior glow.