Hølen Viaduct - Credit: Wikimedia Commons
Hølen Viaduct - Credit: Wikimedia Commons
The Hølen Viaduct () is a disused iron railway viaduct situated at Hølen in Viken county, Norway. The iron carried a single track of the Østfold Line over the river Såna and the valley where the village of Hølen is located. The viaduct was the first pendulum pillar bridge in the world, and was designed by the principle's inventor, Axel Jacob Petersson. It is long. Read more on Wikipedia
Source: en.wikipedia.org