sentences:  The first refurbishment occurred in 1958, the second in 1974, whereas the third, latest and most important reconstruction has been started in 1996, which began operation in 1997 and included a "Rotair" panorama gondola manufactured by the Swiss company Garaventa AG - CWA (Doppelmayr Garaventa Group).Many improvements have been introduced since 1929, with new and bigger gondolas that increased capacity from 20 up to 65 passengers per gondola.However, both the valley and mountain station buildings are original, even they have been extensively upgraded.