It was first ascended in 1642, and fairly frequently in the 1800s. The first Summit House hotel was constructed in 1852, and a year later a carriage road (today’s auto road) was chartered and the Tip-Top House, which still stands today, was constructed. In 1861 the carriage road was completed and in 1869 the Cog Railway (the world’s first mountain-climbing train) began summer service. In 1870-71 the summit was occupied by a scientific team for the duration of the winter. The “firsts” and facts go on and on, and are wonderfully narrated by a CD that you are given when you purchase your pass to drive the 8-mile auto road to the top.