The Semmering Railway is a historic railway line in Austria that connects the towns of Gloggnitz and Mürzzuschlag. Completed in 1854, it was one of the first mountain railways in the world and is renowned for its engineering marvels, including bridges and tunnels that navigate the challenging terrain of the Semmering Pass. This railway is a UNESCO World Heritage Site, recognized for its cultural significance and stunning landscapes. It offers breathtaking views of the surrounding mountains and valleys, making it a popular route for tourists and a vital transportation link in the region.