The Kilauea Lighthouse and National Wildlife Refuge is located in the town of Kilauea, off of route 56 just past mile marker 23. You should see signs. We weren't really expecting to go to the lighthouse, but, as it turns out, it was arguably one of our favorite stops. As in most of Kauai, the scenery is breathtaking. The view is a postcard come to life.
After you park, you can walk to the National Wildlife Refuge visitors’ center. Here they have interesting facts about the area, souvenirs, maps, T-shirts, artwork, and restrooms. There is a voluntary fee to enter the facilities, --this is for upkeep of the venue and area.
When you are complete with your intake of information at the National Wildlife Refuge, take the walkway to the Kilauea Lighthouse. On the walk, you will see ground-burrowing birds and if you get close enough, you can see them inside. Continue on the path and you can't miss the lighthouse. You can't visit the top of the lighthouse, but they do have interesting facts inside. Head to the railings and offshore you will see Moku'ae'ae Island, which I think is a bird sanctuary.
This was really a surprise visit for both of us and we enjoyed every minute of it. If you are in the area, don't miss it.