The Pilatus Railway began operations under steam power on 4th June 1889. It took 600 men 400 days to build the line. It is the world's steepest cog railway with a maximum gradient of 48%. and an average gradient of 35%. The cogwheel railway operates from early/mid May to mid November from Alpnachstadt on the shore of Lake Lucerne to the summit station on Mt. Pilatus.