The Pikes Peak Cog Railway is a historic railway located in Manitou Springs, Colorado, USA. It is the highest cog railway in the world, reaching an elevation of 14,115 feet (4,302 m). The railway was built in 1891 and is still in operation today
From Wikipedia
Pikes Peak or America's Mountain is an ultra-prominent fourteener of the Front Range of the Rocky Mountains of North America. Pikes Peak's summit, with an elevation of 14,115 ft (4,302 m) above sea level, is the easternmost fourteener in the United States. Pikes Peak is in Pike National Forest, Colorado, with the base located in the town of Manitou Springs, 10 miles west of downtown Colorado Springs, Colorado, in El Paso County, United States.