Borkum's appeal is its landscape and its air — the UNESCO-listed Wadden Sea on the sheltered south side, wide North Sea beaches to the north, and the iodine-rich sea air that has made it a health resort since the 19th century. The New Lighthouse dominates the island's skyline, while the Old Lighthouse and the Dykhus Museum tell the island's whaling past. For the best outdoor experience, join a guided Wadden Sea mudflat walk — it's unlike anything else in Germany.