Built: 1874. 90' tower. Visiting the LighthouseOuter Island is the most remote of the six Apostle Islands light stations, and visiting it can be a challenge. The island is not served by scheduled cruises, although the Apostle Islands Cruise Service provides special trips in September as part of their lighthouse celebration activities. Only the most experienced private boaters and sea kayakers should consider attempting a trip to this lighthouse, due to the great distance and exposed location. Even when lake conditions permit approach, the exposed location of the dock often makes landing impossible.