Theme stretch. During our visit to the northern shore of Lake Superior in Minnesota, we stopped to visit two lighthouses. The interiors from the last two days were posted from the Split Rock lighthouse, which is shown below. Classic setting, beautiful day.
Earlier that same day, we stopped by the Two Harbors lighthouse. We didn't go in this one, but enjoyed exploring the rocky shore upon which it was perched.
In the darkness, these lighthouses provided lightness for passing ships.