The Old Lighthouse is a squat, square tower that predates the Dutch golden age and has outlasted empires. Built in 1576, it served as the island's sole navigational light for three centuries before the newer, taller lighthouse took over. Today it stands in the middle of Borkum's old whaling quarter, surrounded by historic houses — several of which still have fences built from whale bones, a striking reminder of the industry that once defined island life here.
The tower itself is no longer climbable for safety reasons, but its ground floor hosts a permanent exhibition called Land of Discoveries, which covers archaeological finds from the nearby old Borkum cemetery and tells the island's maritime history. The whaling quarter around the lighthouse is worth wandering — the bone fences are genuinely unusual, and the scale of the old sperm whale jaws set upright gives you a visceral sense of what those expeditions involved.