In both ancient and modern cultures, leaders set up monuments to commemorate a historical happening.
Wikipedia defines it well: A monument is a type of structure that was explicitly created to commemorate a person or event, or which has become important to a social group as a part of their remembrance of historic times or cultural heritage, or as an example of historic architecture.
Sometimes these were tied to a victory, a death, or a religious experience.
Many cultures also used milestones along the road to allow travelers to note the distance they had traveled since there were no odometers on their sandals or horses. These were kind of mini-monuments along the journey to remind the traveller of progress.
So what does this have to do with you as a leader, the student, the employee or the parent?