The Rhaetian Railway (RhB) is one of Switzerland’s largest private railways, operating a network of over 400 km primarily in the canton of Graubünden. Today’s RhB was formed through the integration of the former Landquart–Davos Railway (LD), the Bernina Railway (BB), and the Chur–Arosa Railway (ChA), marking 100 years since the creation of this extensive network.

To commemorate this milestone — and to honor its roots as well as celebrate the 15th anniversary of its designation as a UNESCO World Heritage site — the ABe 8/12 “Allegra” was introduced in a special revival livery.

Each car of the three-car trainset features a different wrapping design representing the liveries of the three predecessor companies whose lines the Allegra now operates on. Offering a visual journey through RhB’s history in a single formation, this striking appearance has earned it the nickname “Ahnenzug” (Ancestor Train) locally. The fusion of state-of-the-art rolling stock with nostalgic color schemes has attracted widespread attention.