Located at the foot of the cliff, the SBB rotunda was built in 1907. With its motorized turntable of 18 meters in diameter, it could house thirteen locomotives. It currently houses historic rolling stock of the Foundation for the Historical Heritage of the Swiss Federal Railways. The project to transform it into a museum of the Simplon Line did not come to fruition.
Today, it is classified as a historical monument and is thus part of the Swiss industrial and railway heritage, in the same rank as the great Swiss stations of the beginning of the century.