AlpTransit Gotthard Ltd is a Swiss company responsible for the construction of the Gotthard Base Tunnel, the world's longest railway tunnel. Established in 1998, the company focuses on improving transportation through the Swiss Alps, enhancing both passenger and freight services. The Gotthard Base Tunnel spans approximately 57 kilometers and was officially opened in June 2016. This engineering marvel significantly reduces travel time across the region and promotes sustainable transport by encouraging the use of trains over cars and trucks.