St Gervais les Bains is a commune in the Haute-Savoie department. The village is best known for tourism, and has been a popular holiday destination because of its beauty and location since the early 1900s. It has 450 km of ski pistes, reputed to be the third largest domain exclusively in France, and is one of the least busy ski areas of its size.
In winter, the main draw is of course snow sports, and the resort has a multi-national client base. It is increasing in popularity among British holiday-makers. The summer sees tourists arrive from around the world to explore the numerous fair weather alpine activities available such as Mountain Biking, Climbing, Hiking, Paragliding, Rafting, etc. as well as making use of the all year thermal spa ‘Les Thermes’ which sits within the beautiful ‘Parc Thermal’ in the lower village of Le Fayet.
The main railway station for Saint-Gervais is the Gare de Saint-Gervais-les-Bains-Le Fayet. The fabulous and historic Mont Blanc Tramway departs from Le Fayet station and reaches the Nid d’Aigle station at the Bionnassay glacier at an altitude of 2372 m (7800 ft). The Saint-Gervais–Vallorcine railway departs from Le Fayet station and takes you to Chamonix and across the Swiss border to Martigny.
https://tourism.saintgervais.com/
above the view on Mont Blanc
St Gervais can also be a nice stop during a scenic route to Chamonix https://www.taxi-massingy.com/en/scenic-route-from-annecy-to-chamonix/
You can drive from Chamonix down the valley, then stop at le Fayet thermal park (it is open to the public so easy to access) then up to St Gervais center. Enjoy the beautiful buildings on the left when you arrive then park at the public parking or around the Church.