Suspension railways are a type of transportation system where trains are suspended from a track above them, rather than running on tracks below. This design allows for efficient travel in urban areas, as it minimizes the need for extensive ground-level infrastructure. The trains are typically powered by electricity and can navigate curves and inclines easily. One of the most famous examples of a suspension railway is the Wuppertal Suspension Railway in Germany, which has been in operation since 1901. These systems are often used in cities to reduce congestion and provide a unique travel experience above the streets.