In their 156 years of climbing to the summit of Mount Washington, the Cog Railway locomotives have gone from burning wood to burning coal to burning oil to burning diesel to burning biodiesel.
The Broadmoor Manitou & Pikes Peak Cog Railway is a must-do for history and train buffs. This cog railway dates back to 1891 and is the world's highest and longest cog railroad – as well as the ...