The Lunar Lighthouse Puzzle has 2 objectives. Does the tower seem a bit short? The first goal is to find the beacon (or lantern room) that is hidden within the lighthouse and return it to the top. If you want an extra challenge, you may look for the small hidden crescent moon that can adorn the top window of the tower!
As an extra bonus, there are 2 small LED lights included (when you find the beacon or the lantern room, you will find these too!) that can be used as an added effect to light up the top of the puzzle!