Montreux is a Swiss municipality and town on the shoreline of Lake Geneva at the foot of the Alps. It belongs to the district of Riviera-Pays-d'Enhaut in the canton of Vaud in Switzerland, and has a population of approximately 26,433, with about 85,000 in the agglomeration Vevey-Montreux as 2019.

Lake Geneva is a deep lake on the north side of the Alps, shared between Switzerland and France. It is one of the largest lakes in Western Europe and the largest on the course of the Rhône. Sixty percent of the lake belongs to Switzerland and forty percent to France.