A cogwheel train is a type of railway that uses a cogwheel system to climb steep gradients. This system includes a cogwheel that engages with a rack rail, allowing the train to ascend or descend steep slopes safely. Cogwheel trains are often found in mountainous regions, where traditional trains would struggle to maintain traction. These trains are designed for both passenger and freight transport, providing access to remote areas. They are popular tourist attractions, offering scenic views of landscapes. Notable examples include the Rigi Railway in Switzerland and the Gornergrat Railway, which provide breathtaking vistas of the surrounding mountains.