Experience a ride on a bicycle trolley on one of the most beautiful railroad lines in Germany. Just behind Lengenfeld unterm Stein station, the trolley ride takes you over the 244 m long and 24 m high Lengenfeld Viaduct. This unique monument is an engineering masterpiece from the end of the 19th century. In the Obereichsfeld - a region in northern Thuringia - west of Mühlhausen - in the romantic valleys of the Frieda and Lutter rivers, one of the most impressive railroad lines in Germany winds its way through mountains and valleys. From Dingelstädt to Frieda, the railroad once passed through 6 tunnels and crossed 4 viaducts, in particular the unique viaduct spanning the entire village of Lengenfeld unterm Stein.