A historic steam railway in the Swiss Alps is marking its 100th anniversary with celebrations tied to its summer tourist operations. Multiple outlets report that the event features vintage steam locomotives carrying passengers through Alpine scenery. The railway now runs exclusively as a seasonal attraction, operating during the summers between the stations of Realp and Oberwald. Coverage describes train enthusiasts and visitors gathering to mark the milestone over the weekend, with attention focused on the continued use of steam traction as a heritage experience. While details on the original opening date and specific anniversary programming vary by outlet, the overall theme is consistent: the line’s centenary is being observed through special attention to its operating historic trains and the tourist service route through the Alps. The anniversary reflects the railway’s shift from a former transport role to a modern heritage attraction, with summer schedules in place for visitors. Across sources, the centenary is presented as a celebration of the railway’s history and its ongoing role in Alpine tourism.