Kalte Rinne Viaduct Viewpoint (20-Schilling-Blick)

The 20-Schilling-Blick is a signposted stop on the Bahnwanderweg, the railway hiking trail between Semmering station (895 m / 2,936 ft) and Breitenstein station, and the Wiener Alpen tourism board describes it as freely accessible at all times. It is a lookout, not a lineside position: from the viewing point you look west-north-west across the Adlitzgraben to the Kalte Rinne Viaduct, 1.38 km (0.86 mi) away in a straight line, whose official figures are 184 m (604 ft) long and 46 m (151 ft) high. German Wikipedia's photo caption lists what the frame holds from left to right: the Kalte Rinne Viaduct, the Polleroswand tunnel, the Krauselklause Viaduct and the Krausel tunnel, so a single train can be followed across two viaducts and in and out of two tunnel mouths. Because the line threads tunnels, a train is visible on the viaduct only briefly; listen for it in the valley and have the camera ready before it emerges from the Polleroswand side. The viewpoint is also the start of a short walk rather than a place to spend a whole day: many visitors continue along the trail to the Ghega Museum, which stands next to the viaduct itself, and finish at Breitenstein station. No source gives a train count for this section, so plan to wait: long-distance, regional and freight trains all use the line, but none of them runs to a published frequency that this record can quote.

The viewpoint sits on the wooded slopes above the Adlitzgraben, on the Lower Austrian side of the Semmering Pass, whose railway summit lies at 898 m (2,946 ft) near Semmering station. Below and to the west, the railway clings to the valley side in a chain of structures that UNESCO names in sequence: the Weinzettelwand, the Krauselklause and the Polleroswand, before what UNESCO calls the last and most dramatic section of the whole route, the Kalte Rinne. The viaduct is a curved, two-storey brick structure; German Wikipedia counts ten arches on the upper level and five below, and compares its decoration of rosettes and cornices to Venetian palaces, a nod to its engineer Carl von Ghega's Venetian origins. Behind the viaduct the Polleroswand rock face rises, and the Kalte Rinne valley opens up to the north-west. The setting is also a period landscape: UNESCO notes the villas and hotels built along the line in the late 19th and early 20th centuries, and the trail passes several of them near Semmering-Kurort. Semmering is an electrified main line, so every modern train runs under 15 kV overhead wires, which sets the view apart from a steam-era postcard even though the masonry itself has barely changed since 1854. The 919 m (3,015 ft) Doppelreiter lookout tower stands 400 m (0.25 mi) to the east on the same trail.

UNESCO inscribed the Semmering Railway on the World Heritage List in 1998, calling the line, built between 1848 and 1854 over 41 km (25 mi) of high mountains, one of the greatest feats of civil engineering from the pioneering phase of railway building, in continuous use since 1854. Its fourteen tunnels total 1,477 m (4,846 ft), almost a tenth of the route, and by coincidence its sixteen major viaducts total the same length, alongside 118 smaller stone arch bridges, 11 iron bridges and 57 two-storey trackside attendants' houses. German Wikipedia dates the Kalte Rinne Viaduct to 1850 to 1853 and gives its position as km 98.79, on a 17 per mille gradient; the line's steepest gradients reach 28 per mille and its tightest curves have a 190 m (623 ft) radius. It was electrified in stages between 1956 and 1959. The viaduct appeared on the reverse of the penultimate Austrian 20-schilling banknote, which carried a portrait of the engineer Carl Ritter von Ghega on the front; the Semmeringbahn article gives its issue date as 4 November 1968, while the viaduct article says 1967. That note gave the viewpoint its name. On 1 September 2012 the first museum devoted to Ghega opened in the former attendant's house beside the viaduct. The line's future is now tied to the Semmering Base Tunnel, a new route of about 27 km (17 mi) between Gloggnitz and Mürzzuschlag; the Land Niederösterreich press release of January 2025 records the commitment to keep the mountain line for local and excursion traffic.

Few trainspotting locations have been printed on a national currency. The 20-Schilling-Blick is the exact viewpoint reproduced on the back of an Austrian banknote, and it looks onto the most-photographed structure of the first mountain railway on the World Heritage List. A second unusual feature is that the view covers four named structures at once: the Kalte Rinne Viaduct, the Polleroswand tunnel, the Krauselklause Viaduct and the Krausel tunnel, so the same train can be photographed several times in one pass. Third, the viewpoint is reached by public transport: Semmering station, the Wolfsbergkogel halt 530 m (0.33 mi) away, Breitenstein station 740 m (0.46 mi) away (all straight-line distances) and on-demand RUFbus stop SE5 '20-Schilling-Blick Wandereinstieg' all serve the trail, so a visit is possible without a car. Fourth, the traffic may change within a few years. ÖBB says the Semmering Base Tunnel will relieve the historic line: its Südstrecke page speaks of completion by 2030, while its English project page says 'from 2029'. The regional government promises to keep the mountain line for local and excursion trains, so long-distance Railjets and heavy freight on a 19th-century viaduct are the traffic most likely to leave, which is a reason to visit before the base tunnel opens. Finally, admission to the nearby Ghega Museum is by donation, and it adds context that the viewpoint alone cannot give.