The Glacier Express is an express train connecting railway stations of the two major mountain resorts of St. Moritz and Zermatt in the Swiss Alps. The train is operated jointly by the Matterhorn Gotthard Bahn (MGB) and Rhaetian Railway (RhB). For much of its journey, it also passes along and through the World Heritage Site known as the Rhaetian Railway in the Albula / Bernina Landscapes.