Horseshoe Curve, located near Altoona, Pennsylvania, is a historic railroad curve built by the Pennsylvania Railroad in 1854 to cross the Allegheny Mountains. The 2,375-foot-long curve, with a 220-degree arc, was a crucial engineering feat that enabled more efficient rail travel between the eastern U.S. and the Midwest. During World War II, it was a strategic transportation route and a target of Nazi sabotage plans. Today, it remains an active rail line and a popular tourist attraction with an observation area and a museum.
The Horseshoe Curve webcam is a moving live stream with sound, showing trains as they pass through the curve in Altoona, Pennsylvania. It covers not only the curved section of the railroad but also a straight portion and the museum area. Viewers can watch rail traffic in real time and hear the sounds of passing trains.