Grótta Island Lighthouse is a charming spot at the tip of the Seltjarnarnes Peninsula, just a stone's throw from Reykjavík. This historic lighthouse has been standing tall since 1947, offering stunning views of the rugged coastline and abundant birdlife in the area. It's a popular spot for birdwatching in summer, Northern Lights hunting in winter, and even a dip in a geothermally heated pool while you wait for the auroras to dance across the sky. Just watch out for those dive-bombing Arctic Terns if you get too close to their nests!