A lighthouse highlights the correct course of action to help us achieve our spiritual goals. It can also take on the symbolism of the tower. A lighthouse can act as a beacon and can lead us into calmer waters. It is also a warning system, and in dreams it tends to warn us of emotional difficulties. It can often have this significance in dreams whether emotionally or spiritually. It will depend on whether we are aware in the dream of being on land or at sea. If we are on land we are being warned of difficulties to come, probably from our own emotions. If we are at sea we need to be careful not to create misunderstandings for ourselves by ignoring problems and be sure to steer the right course. You might also like to consult the entries for Beacon, Light and Tower.