The Sieg Railway is a railway line in Germany that connects the towns of Siegen and Dillenburg. It is part of the larger North-South Railway network and primarily serves regional passenger transport. The line runs through the scenic Sieg Valley, offering picturesque views of the surrounding landscape. Opened in the mid-19th century, the Sieg Railway has played a significant role in the development of the region's economy and infrastructure. Today, it is operated by DB Regio, providing essential connectivity for commuters and travelers in the area.