The rack and pinion train stops four times before getting to the end of the line at the Nid d'Aigle (eagle's nest) viewpoint, from where you get a fabulous view of the Bionnassay glacier, the beginning of one of the mountaineering routes up Mont Blanc.
The journey up from St Gervais - Le Fayet takes around an hour and a quarter and allows you to climb from 580m up to 2,380m at its final stop. You'll have the pleasure of being in one of the carriages named Marguerite, Anne, Marie or Jeanne, after the daughters of the owner of the site.
There are a number of lovely hikes in the area and mountain bikes are permitted on the tram subject to space. During the winter, the train stops at Bellevue and provides access to the Les Houches ski area.
Take a look at the timetables.