Hafnarhólmi is a rocky outcrop in Iceland that's perfect for bird watching, especially puffins, kittiwakes, arctic terns, and common eiders. It's a safe spot where you can stroll among the nesting birds on wooden walkways without any cliff-hanging drama. Once an island, it's now connected to the mainland with a harbor nearby. If you're lucky with the weather, you might not even need the observation post there. Just chill and enjoy the feathered company!