1952 was an extraordinary year in the history of Tour de France, not only because the terrific performance of Fausto Coppi. But also, it was the first time, when a Tour de France stage ended on the top of the ascent: this was the legendary debut of Alpe d'Huez.
The program of the 39th Tour de France included a total of three summit finishes. Besides Alpe d'Huez (10th stage) and Sestriere (11th stage),
the peloton also visited Puy de Dome (21st stage) for the very first time.
The first conquerer of the summit was Fausto Coppi, who won all three hilltop finish stages that year. He dominated the race so much, that after the 11th stage the organizers doubled the prize money for the other places in the GC to motivate the other riders.
(Leadpicture: Fausto Coppi at the Tour de France 1952, but not on the Puy de Dôme)