The Lick Observatory at Mount Hamilton was built in 1886 and was the first ever observatory, in the world, to be on top of a mountain. The Hamilton Road was built that same year so that the observatory could be constructed. Every load of materials that were brought up for the construction of the observatory were transported by horses and mules, which took a day to bring to the top of the mountain.
After the observatory was built, visitors came via horseback in a ride, from San Jose, that took five hours to reach the structure. Once at the observatory visitors only had an hour to roam, until they had to return to the horses for the five hour trek back to San Jose.