Lighthouse and town look great. However, it is clear there is a light that is not coming from the lighthouse that is lighting both the lighthouse and the houses but not lighting the island. Either that or you are using an emissive material on the lighthouse and houses, which is a unique choice, since buildings don’t emit light on their own. It seems odd that there these objects would be so brightly lit but the island would be in almost total darkness. Something to think about for future work as you continue your Blender journey.