The highest peak is the "Valluga" at . The name Arlberg derives from the tradition of the "Arlenburg," who are said to have once established themselves on the Tyrolean side of the Arlberg passes (1,793 m over sea level). Another story derives the name from the "Arlenbushes" that are very numerous here. There is no mountain with the name "Arlberg" proper. Popular places and famous ski resorts at the Arlberg are Lech, Zürs, Stuben, St. Christoph and St. Anton.
With the rise of motor traffic in the 20th century, however, this became inadequate. It was decided that a 14 km long Arlberg Road Tunnel would be built between Langen and St. Anton. On July 5, 1974 the work began and the passage was opened to traffic on December 1, 1978. The tunnel has a toll, however the old road over the pass is toll-free. A peculiarity of the tunnel is that it actually consists of two tunnels. On the Tyrolian side it is built over the "Rosanna Gorge" before the actual massif rises up in the direction of Vorarlberg over the tunnel.