Badische Schwarzwaldbahn, Black Forest, Germany
The Badische Schwarzwaldbahn or The Black Forest Railway (as we know it) was built between 1863 and 1873 and today is a twin-track, electrified railway line running in a north-west to south-east direction and links Offenburg on the Rhine Valley Railway with Singen on the Upper Rhine Railway. It passes directly across the Black Forest, through spectacular scenery on a route that is one hundred and fifty kilometres long, ascends six hundred and fifty metres from lowest to highest elevation, and passes through thirty-nine tunnels and over two viaducts. It is the only true mountain railway in Germany to be built with two tracks, and is the most important railway line in the Black Forest.