The RhB, or Rhaetian Railway, is a scenic railway in Switzerland known for its stunning routes through the Swiss Alps. It operates a network of narrow-gauge trains that connect various towns and villages in the Graubünden region, making it a popular choice for both locals and tourists. One of the highlights of the RhB is the Bernina Express, which offers breathtaking views as it travels from Chur to Tirano in Italy. The railway is recognized as a UNESCO World Heritage site, showcasing its historical significance and the engineering marvels of its bridges and tunnels.