With extraordinary rail routes (picture tunnels through snow-covered mountains and bridges over steep-sided valleys), Switzerland is made for memorable train travel. From our base in Davos, join us on this rail tour of Switzerland as we take two of its most iconic ‘express’ journeys. Board the Bernina Express to climb the vertiginous 2,253m Bernina Pass and descend the incredible 110m-long spiral viaduct at Brusio. Then marvel at the astonishing Alpine views from the gratifyingly slow-paced Glacier Express, and swap rails for water as we cruise scenic Lake Constance.