Zermatt
The best resort to reach by train in Switzerland, fully car free at the end of a scenic line.
Zermatt tops the list because it is completely car free and reached only by train from Visp on the main line, so you step off and into the resort. Beneath the Matterhorn it offers the highest skiing in the Alps and a glacier open into summer.
It edges out Wengen on sheer scale and snow security. Swiss prices are steep and the village busy, but for a car free trip with a spectacular rail approach and world class skiing it is the clear number one.