The famous Brusio spiral viaduct on the Bernina Railway Line, is an unique feature and one of the highlights of this highest railway crossing of the Alps. Start at Tirano at 430 m.a.s.l just on the border of Italy and Switzerland and then over the Bernina Pass at 2253 m.a.s.l. towards St. Moritz. The gradient never exceeds 7 promille. A great engineering masterwork. Jungfrau Tours offers the perfect package tour that includes this stretch.

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