The Bridgnorth Cliff Railway, also known as the Bridgnorth Funicular Railway or Castle Hill Railway, is a funicular railway in the town of Bridgnorth in the English county of Shropshire. The line links the Low Town of Bridgnorth, adjacent to the River Severn, with the High Town, adjacent to the ruins of Bridgnorth Castle.

The line is one of four funicular railways in the UK built to the same basic design (the others were the Clifton Rocks Railway in Bristol; the Lynton and Lynmouth Cliff Railway in Devon; and the Constitution Hill Railway in Aberystwyth, Wales). It is one of the steepest railways in the country, and local sources claim it is both the steepest and the shortest.

Originally the railway was powered by a simple system using water and gravity. Water was pumped into a 2,000-imperial-gallon tank beneath the top car until its weight, a maximum of 11.5 long tons, overcame that of the lower car. When the car reached the bottom station the tank was emptied and pumped up to a 30,000-imperial-gallon tank on the top of the upper station.

Between 1943 and 1944 the system was rebuilt to use electricity.

More Info: en.wikipedia.org